/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/Problem17_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:40:09,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:40:09,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:40:09,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:40:09,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:40:09,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:40:09,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:40:09,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:40:09,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:40:09,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:40:09,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:40:09,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:40:09,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:40:09,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:40:09,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:40:09,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:40:09,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:40:09,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:40:09,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:40:09,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:40:09,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:40:09,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:40:09,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:40:09,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:40:09,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:40:09,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:40:09,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:40:09,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:40:09,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:40:09,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:40:09,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:40:09,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:40:09,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:40:09,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:40:09,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:40:09,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:40:09,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:40:09,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:40:09,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:40:09,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:40:09,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:40:09,207 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 09:40:09,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:40:09,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:40:09,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:40:09,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:40:09,257 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:40:09,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:40:09,260 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:40:09,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:40:09,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:40:09,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:40:09,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:40:09,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:40:09,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:40:09,262 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:40:09,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:40:09,262 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:40:09,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:40:09,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:40:09,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:40:09,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:40:09,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:40:09,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:40:09,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:40:09,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:40:09,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:40:09,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:40:09,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:40:09,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:40:09,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:40:09,265 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 09:40:09,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:40:09,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:40:09,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:40:09,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:40:09,609 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:40:09,610 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label54.c [2020-10-13 09:40:09,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27dfc68b1/632e9cc325a14a958c72526f49e52419/FLAGa06530d00 [2020-10-13 09:40:10,492 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:40:10,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label54.c [2020-10-13 09:40:10,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27dfc68b1/632e9cc325a14a958c72526f49e52419/FLAGa06530d00 [2020-10-13 09:40:10,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27dfc68b1/632e9cc325a14a958c72526f49e52419 [2020-10-13 09:40:10,586 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:40:10,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:40:10,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:40:10,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:40:10,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:40:10,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:10" (1/1) ... [2020-10-13 09:40:10,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6266eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:10, skipping insertion in model container [2020-10-13 09:40:10,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:10" (1/1) ... [2020-10-13 09:40:10,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:40:10,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:40:12,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:40:12,022 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:40:12,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:40:12,597 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:40:12,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:12 WrapperNode [2020-10-13 09:40:12,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:40:12,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:40:12,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:40:12,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:40:12,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:12" (1/1) ... [2020-10-13 09:40:12,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:12" (1/1) ... [2020-10-13 09:40:12,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:12" (1/1) ... [2020-10-13 09:40:12,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:12" (1/1) ... [2020-10-13 09:40:12,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:12" (1/1) ... [2020-10-13 09:40:12,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:12" (1/1) ... [2020-10-13 09:40:12,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:12" (1/1) ... [2020-10-13 09:40:12,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:40:12,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:40:12,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:40:12,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:40:12,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:12" (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 09:40:13,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:40:13,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:40:13,001 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:40:13,001 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:40:13,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:40:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:40:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:40:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:40:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:40:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:40:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:40:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:40:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:40:20,290 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:40:20,290 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:40:20,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:20 BoogieIcfgContainer [2020-10-13 09:40:20,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:40:20,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:40:20,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:40:20,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:40:20,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:40:10" (1/3) ... [2020-10-13 09:40:20,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17499652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:20, skipping insertion in model container [2020-10-13 09:40:20,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:12" (2/3) ... [2020-10-13 09:40:20,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17499652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:20, skipping insertion in model container [2020-10-13 09:40:20,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:20" (3/3) ... [2020-10-13 09:40:20,311 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label54.c [2020-10-13 09:40:20,324 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:40:20,335 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:40:20,353 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:40:20,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:40:20,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:40:20,387 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:40:20,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:40:20,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:40:20,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:40:20,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:40:20,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:40:20,422 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:40:20,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 09:40:20,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:40:20,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:40:20,431 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:40:20,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:40:20,439 INFO L82 PathProgramCache]: Analyzing trace with hash 51921113, now seen corresponding path program 1 times [2020-10-13 09:40:20,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:40:20,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209030576] [2020-10-13 09:40:20,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:40:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:20,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:20,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:20,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 09:40:20,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:20,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-13 09:40:20,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:40:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:40:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:40:20,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:40:21,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:40:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:21,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:21,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:21,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:40:21,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:21,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:40:21,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:21,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:40:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:40:21,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:21,109 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 09:40:21,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209030576] [2020-10-13 09:40:21,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:40:21,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:40:21,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079766210] [2020-10-13 09:40:21,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:40:21,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:40:21,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:40:21,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:40:21,138 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:40:34,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:40:34,583 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-13 09:40:34,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:40:34,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 09:40:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:40:34,621 INFO L225 Difference]: With dead ends: 1692 [2020-10-13 09:40:34,622 INFO L226 Difference]: Without dead ends: 1012 [2020-10-13 09:40:34,637 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 09:40:34,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-13 09:40:34,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-13 09:40:34,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:40:34,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-13 09:40:34,839 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 19 [2020-10-13 09:40:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:40:34,840 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-13 09:40:34,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:40:34,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-13 09:40:34,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 09:40:34,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:40:34,848 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:40:34,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:40:34,849 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:40:34,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:40:34,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1846572815, now seen corresponding path program 1 times [2020-10-13 09:40:34,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:40:34,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101939392] [2020-10-13 09:40:34,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:40:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:35,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:35,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:36,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:36,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:40:36,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:40:36,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1240 [2020-10-13 09:40:36,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:36,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:40:36,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:40:36,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:40:36,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:40:36,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:40:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:36,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:36,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:40:36,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:36,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:40:36,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:40:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:40:36,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 09:40:36,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:40:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:36,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:36,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:36,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:40:36,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:36,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-13 09:40:36,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:36,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:40:36,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:36,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:40:36,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:40:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:40:36,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101939392] [2020-10-13 09:40:36,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:40:36,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:40:36,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363095679] [2020-10-13 09:40:36,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:40:36,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:40:36,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:40:36,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:40:36,656 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-13 09:40:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:40:50,234 INFO L93 Difference]: Finished difference Result 2884 states and 4479 transitions. [2020-10-13 09:40:50,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:40:50,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 09:40:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:40:50,249 INFO L225 Difference]: With dead ends: 2884 [2020-10-13 09:40:50,250 INFO L226 Difference]: Without dead ends: 1888 [2020-10-13 09:40:50,254 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 09:40:50,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-13 09:40:50,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2020-10-13 09:40:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-13 09:40:50,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2587 transitions. [2020-10-13 09:40:50,328 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2587 transitions. Word has length 90 [2020-10-13 09:40:50,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:40:50,329 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2587 transitions. [2020-10-13 09:40:50,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:40:50,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2587 transitions. [2020-10-13 09:40:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 09:40:50,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:40:50,333 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:40:50,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:40:50,334 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:40:50,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:40:50,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1300994527, now seen corresponding path program 1 times [2020-10-13 09:40:50,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:40:50,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735576967] [2020-10-13 09:40:50,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:40:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:50,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:50,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:50,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 09:40:50,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:50,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-13 09:40:50,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:40:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:40:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:40:50,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:40:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:50,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:50,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:40:50,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:50,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:40:50,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:40:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:40:50,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:40:50,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:40:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:50,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:50,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:50,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:40:50,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:50,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-13 09:40:50,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:40:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:40:50,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:40:51,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735576967] [2020-10-13 09:40:51,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:40:51,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:40:51,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448114621] [2020-10-13 09:40:51,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:40:51,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:40:51,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:40:51,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:40:51,034 INFO L87 Difference]: Start difference. First operand 1884 states and 2587 transitions. Second operand 5 states. [2020-10-13 09:41:05,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:41:05,291 INFO L93 Difference]: Finished difference Result 4659 states and 6588 transitions. [2020-10-13 09:41:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:41:05,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 09:41:05,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:41:05,310 INFO L225 Difference]: With dead ends: 4659 [2020-10-13 09:41:05,310 INFO L226 Difference]: Without dead ends: 2781 [2020-10-13 09:41:05,316 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 09:41:05,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2020-10-13 09:41:05,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2775. [2020-10-13 09:41:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-10-13 09:41:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3663 transitions. [2020-10-13 09:41:05,405 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3663 transitions. Word has length 93 [2020-10-13 09:41:05,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:41:05,406 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3663 transitions. [2020-10-13 09:41:05,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:41:05,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3663 transitions. [2020-10-13 09:41:05,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 09:41:05,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:41:05,409 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:41:05,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:41:05,410 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:41:05,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:41:05,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1051836897, now seen corresponding path program 1 times [2020-10-13 09:41:05,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:41:05,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024634320] [2020-10-13 09:41:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:41:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:05,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:05,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:06,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:06,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:41:06,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:41:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-10-13 09:41:06,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:41:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:41:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:41:06,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:06,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:41:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:06,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:06,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:06,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:41:06,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:06,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:41:06,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:41:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:06,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:41:06,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:41:06,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:41:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:06,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:06,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:06,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:41:06,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 09:41:06,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:41:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:41:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:41:06,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024634320] [2020-10-13 09:41:06,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:41:06,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:41:06,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33469024] [2020-10-13 09:41:06,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:41:06,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:41:06,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:41:06,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:41:06,797 INFO L87 Difference]: Start difference. First operand 2775 states and 3663 transitions. Second operand 5 states. [2020-10-13 09:41:21,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:41:21,641 INFO L93 Difference]: Finished difference Result 6454 states and 8792 transitions. [2020-10-13 09:41:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:41:21,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 09:41:21,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:41:21,681 INFO L225 Difference]: With dead ends: 6454 [2020-10-13 09:41:21,682 INFO L226 Difference]: Without dead ends: 3685 [2020-10-13 09:41:21,690 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 09:41:21,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2020-10-13 09:41:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3672. [2020-10-13 09:41:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2020-10-13 09:41:21,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 4859 transitions. [2020-10-13 09:41:21,812 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 4859 transitions. Word has length 98 [2020-10-13 09:41:21,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:41:21,812 INFO L479 AbstractCegarLoop]: Abstraction has 3672 states and 4859 transitions. [2020-10-13 09:41:21,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:41:21,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 4859 transitions. [2020-10-13 09:41:21,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 09:41:21,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:41:21,817 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:41:21,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:41:21,818 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:41:21,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:41:21,818 INFO L82 PathProgramCache]: Analyzing trace with hash 133202311, now seen corresponding path program 1 times [2020-10-13 09:41:21,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:41:21,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404736209] [2020-10-13 09:41:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:41:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:21,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:23,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:23,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:41:23,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:41:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1625 [2020-10-13 09:41:23,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:41:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 09:41:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:41:23,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:23,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:41:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:23,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:23,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:23,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:41:23,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:23,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:41:23,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:23,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:41:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:41:23,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:23,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:41:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:23,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:23,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:23,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 09:41:23,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:23,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-13 09:41:23,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:41:23,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:23,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 09:41:23,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:41:24,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404736209] [2020-10-13 09:41:24,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:41:24,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:41:24,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303935414] [2020-10-13 09:41:24,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:41:24,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:41:24,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:41:24,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:41:24,056 INFO L87 Difference]: Start difference. First operand 3672 states and 4859 transitions. Second operand 5 states. [2020-10-13 09:41:42,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:41:42,932 INFO L93 Difference]: Finished difference Result 10850 states and 14601 transitions. [2020-10-13 09:41:42,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:41:42,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 09:41:42,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:41:42,985 INFO L225 Difference]: With dead ends: 10850 [2020-10-13 09:41:42,986 INFO L226 Difference]: Without dead ends: 7184 [2020-10-13 09:41:43,000 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 09:41:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2020-10-13 09:41:43,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 7180. [2020-10-13 09:41:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7180 states. [2020-10-13 09:41:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7180 states to 7180 states and 9166 transitions. [2020-10-13 09:41:43,232 INFO L78 Accepts]: Start accepts. Automaton has 7180 states and 9166 transitions. Word has length 121 [2020-10-13 09:41:43,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:41:43,238 INFO L479 AbstractCegarLoop]: Abstraction has 7180 states and 9166 transitions. [2020-10-13 09:41:43,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:41:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 7180 states and 9166 transitions. [2020-10-13 09:41:43,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 09:41:43,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:41:43,245 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:41:43,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:41:43,246 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:41:43,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:41:43,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1336776783, now seen corresponding path program 1 times [2020-10-13 09:41:43,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:41:43,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106724436] [2020-10-13 09:41:43,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:41:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:43,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:43,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:43,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:46,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:48,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:48,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 09:41:48,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:41:48,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 09:41:48,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 09:41:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:41:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:41:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:48,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:41:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:48,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:48,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:48,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:41:48,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:41:48,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:41:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:41:48,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:48,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:41:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:48,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:48,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:41:48,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:48,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:41:48,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:48,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:41:48,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:41:48,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:48,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:41:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:48,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:49,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:49,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:41:49,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:41:49,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-13 09:41:49,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:49,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 09:41:49,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:41:49,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 09:41:49,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:49,927 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-13 09:41:50,142 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-13 09:41:50,359 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-13 09:41:50,590 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-13 09:41:50,799 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-13 09:41:51,093 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-10-13 09:41:51,411 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-10-13 09:41:51,810 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2020-10-13 09:41:52,240 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-10-13 09:41:52,735 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-13 09:41:53,164 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-10-13 09:41:53,558 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-13 09:41:53,898 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-13 09:41:54,158 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-13 09:41:54,367 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-13 09:41:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:41:54,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106724436] [2020-10-13 09:41:54,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:41:54,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 09:41:54,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969252816] [2020-10-13 09:41:54,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 09:41:54,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:41:54,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 09:41:54,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:41:54,620 INFO L87 Difference]: Start difference. First operand 7180 states and 9166 transitions. Second operand 22 states. [2020-10-13 09:41:54,880 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-13 09:41:55,125 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-13 09:41:55,388 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-13 09:41:55,648 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-13 09:41:55,887 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-13 09:41:56,202 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-13 09:41:56,566 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-13 09:41:56,889 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-13 09:41:57,165 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-13 09:41:57,503 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-13 09:41:57,782 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-13 09:41:58,103 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-13 09:41:58,364 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-10-13 09:41:58,688 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-13 09:41:58,895 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-13 09:41:59,042 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-13 09:41:59,722 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-13 09:41:59,994 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-13 09:42:00,221 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-13 09:42:00,576 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-13 09:42:00,957 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-13 09:42:01,334 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-13 09:42:01,640 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-10-13 09:42:02,295 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-10-13 09:42:02,728 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-13 09:42:03,098 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-13 09:42:03,574 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-10-13 09:42:03,917 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-13 09:42:04,255 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-13 09:42:04,556 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-13 09:42:04,966 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-13 09:42:05,184 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-13 09:42:05,658 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-13 09:42:06,603 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-13 09:42:07,160 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-13 09:42:08,145 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-10-13 09:42:09,003 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2020-10-13 09:42:11,757 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-13 09:42:12,420 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-13 09:42:15,074 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-10-13 09:42:17,386 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-10-13 09:42:21,128 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-13 09:42:21,347 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-13 09:42:21,918 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-10-13 09:42:23,641 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-10-13 09:42:25,893 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-13 09:42:27,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:27,383 INFO L93 Difference]: Finished difference Result 15360 states and 19952 transitions. [2020-10-13 09:42:27,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-13 09:42:27,386 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 168 [2020-10-13 09:42:27,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:27,421 INFO L225 Difference]: With dead ends: 15360 [2020-10-13 09:42:27,422 INFO L226 Difference]: Without dead ends: 7812 [2020-10-13 09:42:27,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=1315, Invalid=4537, Unknown=0, NotChecked=0, Total=5852 [2020-10-13 09:42:27,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7812 states. [2020-10-13 09:42:27,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7812 to 7297. [2020-10-13 09:42:27,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7297 states. [2020-10-13 09:42:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7297 states to 7297 states and 8896 transitions. [2020-10-13 09:42:27,642 INFO L78 Accepts]: Start accepts. Automaton has 7297 states and 8896 transitions. Word has length 168 [2020-10-13 09:42:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:27,643 INFO L479 AbstractCegarLoop]: Abstraction has 7297 states and 8896 transitions. [2020-10-13 09:42:27,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 09:42:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand 7297 states and 8896 transitions. [2020-10-13 09:42:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 09:42:27,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:27,647 INFO L422 BasicCegarLoop]: trace histogram [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, 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 09:42:27,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:42:27,648 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:27,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:27,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1903898881, now seen corresponding path program 1 times [2020-10-13 09:42:27,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:27,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884378482] [2020-10-13 09:42:27,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:27,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:27,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:30,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:31,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:31,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-13 09:42:31,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:42:31,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4111 [2020-10-13 09:42:31,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:42:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:42:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:42:31,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:42:31,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:31,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:31,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:31,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:31,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:42:31,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:31,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:31,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:31,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:31,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:42:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:31,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:32,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:32,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:42:32,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:32,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:42:32,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:32,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:32,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:32,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:32,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:32,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:42:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:32,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:32,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:32,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:42:32,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:32,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:42:32,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:32,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:32,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:32,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:42:32,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:42:32,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884378482] [2020-10-13 09:42:32,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:42:32,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:42:32,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376399933] [2020-10-13 09:42:32,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:42:32,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:32,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:42:32,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:42:32,303 INFO L87 Difference]: Start difference. First operand 7297 states and 8896 transitions. Second operand 5 states. [2020-10-13 09:42:47,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:47,860 INFO L93 Difference]: Finished difference Result 21297 states and 26602 transitions. [2020-10-13 09:42:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:42:47,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-13 09:42:47,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:47,919 INFO L225 Difference]: With dead ends: 21297 [2020-10-13 09:42:47,919 INFO L226 Difference]: Without dead ends: 14006 [2020-10-13 09:42:47,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 09:42:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14006 states. [2020-10-13 09:42:48,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14006 to 13976. [2020-10-13 09:42:48,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13976 states. [2020-10-13 09:42:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13976 states to 13976 states and 17406 transitions. [2020-10-13 09:42:48,291 INFO L78 Accepts]: Start accepts. Automaton has 13976 states and 17406 transitions. Word has length 181 [2020-10-13 09:42:48,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:48,292 INFO L479 AbstractCegarLoop]: Abstraction has 13976 states and 17406 transitions. [2020-10-13 09:42:48,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:42:48,292 INFO L276 IsEmpty]: Start isEmpty. Operand 13976 states and 17406 transitions. [2020-10-13 09:42:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-13 09:42:48,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:48,298 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:48,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:42:48,299 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:48,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:48,299 INFO L82 PathProgramCache]: Analyzing trace with hash -99866097, now seen corresponding path program 1 times [2020-10-13 09:42:48,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:48,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788372148] [2020-10-13 09:42:48,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:48,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:48,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:48,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:49,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:49,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:50,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:52,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:52,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-13 09:42:52,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:42:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4623 [2020-10-13 09:42:52,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 209 [2020-10-13 09:42:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:42:52,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:53,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:53,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:53,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:53,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:53,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:42:53,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:53,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:53,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:42:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:53,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:53,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:42:53,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:42:53,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:53,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 09:42:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:53,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:53,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 09:42:53,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:53,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 09:42:53,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:53,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:42:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:42:53,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:42:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:42:53,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788372148] [2020-10-13 09:42:53,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:42:53,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:42:53,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974542831] [2020-10-13 09:42:53,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:42:53,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:53,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:42:53,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:42:53,429 INFO L87 Difference]: Start difference. First operand 13976 states and 17406 transitions. Second operand 5 states. [2020-10-13 09:43:06,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:06,025 INFO L93 Difference]: Finished difference Result 33227 states and 42560 transitions. [2020-10-13 09:43:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:43:06,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-13 09:43:06,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:06,127 INFO L225 Difference]: With dead ends: 33227 [2020-10-13 09:43:06,127 INFO L226 Difference]: Without dead ends: 19257 [2020-10-13 09:43:06,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:43:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19257 states. [2020-10-13 09:43:06,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19257 to 19234. [2020-10-13 09:43:06,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19234 states. [2020-10-13 09:43:06,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19234 states to 19234 states and 23520 transitions. [2020-10-13 09:43:06,646 INFO L78 Accepts]: Start accepts. Automaton has 19234 states and 23520 transitions. Word has length 218 [2020-10-13 09:43:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:06,647 INFO L479 AbstractCegarLoop]: Abstraction has 19234 states and 23520 transitions. [2020-10-13 09:43:06,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:43:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 19234 states and 23520 transitions. [2020-10-13 09:43:06,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-13 09:43:06,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:06,656 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:06,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:43:06,657 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:06,657 INFO L82 PathProgramCache]: Analyzing trace with hash 441433835, now seen corresponding path program 1 times [2020-10-13 09:43:06,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:06,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455646036] [2020-10-13 09:43:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:06,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:06,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:07,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:08,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:09,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:11,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:11,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-13 09:43:11,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:43:11,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 09:43:11,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:43:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 241 [2020-10-13 09:43:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 09:43:11,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:11,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:11,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:11,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:11,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:11,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:11,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:43:11,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:11,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:11,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:11,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:11,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:11,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:43:11,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:11,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:43:11,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:11,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:11,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:11,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 09:43:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:12,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:12,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:12,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 09:43:12,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:12,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-13 09:43:12,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:43:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:12,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-13 09:43:12,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:43:12,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455646036] [2020-10-13 09:43:12,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:12,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:43:12,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498736158] [2020-10-13 09:43:12,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:43:12,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:12,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:43:12,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:43:12,450 INFO L87 Difference]: Start difference. First operand 19234 states and 23520 transitions. Second operand 6 states. [2020-10-13 09:43:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:35,429 INFO L93 Difference]: Finished difference Result 57320 states and 72055 transitions. [2020-10-13 09:43:35,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:43:35,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2020-10-13 09:43:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:35,538 INFO L225 Difference]: With dead ends: 57320 [2020-10-13 09:43:35,539 INFO L226 Difference]: Without dead ends: 38092 [2020-10-13 09:43:35,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:43:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38092 states. [2020-10-13 09:43:36,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38092 to 35914. [2020-10-13 09:43:36,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35914 states. [2020-10-13 09:43:36,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35914 states to 35914 states and 43398 transitions. [2020-10-13 09:43:36,289 INFO L78 Accepts]: Start accepts. Automaton has 35914 states and 43398 transitions. Word has length 250 [2020-10-13 09:43:36,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:36,290 INFO L479 AbstractCegarLoop]: Abstraction has 35914 states and 43398 transitions. [2020-10-13 09:43:36,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:43:36,290 INFO L276 IsEmpty]: Start isEmpty. Operand 35914 states and 43398 transitions. [2020-10-13 09:43:36,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-13 09:43:36,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:36,310 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:36,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:43:36,310 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:36,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:36,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1371747468, now seen corresponding path program 1 times [2020-10-13 09:43:36,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:36,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569862098] [2020-10-13 09:43:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:36,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:36,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:38,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:38,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:39,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:41,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:43:41,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:43:41,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 09:43:41,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:41,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:41,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 267 [2020-10-13 09:43:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:43:41,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:41,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:41,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:41,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:41,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:43:41,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:41,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:41,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:41,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:41,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:43:41,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:41,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:43:41,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:41,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:41,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 09:43:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:41,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:41,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 09:43:41,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:41,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:43:41,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-13 09:43:41,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:43:41,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569862098] [2020-10-13 09:43:41,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:41,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:43:41,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116831363] [2020-10-13 09:43:41,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:43:41,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:41,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:43:41,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:43:41,815 INFO L87 Difference]: Start difference. First operand 35914 states and 43398 transitions. Second operand 5 states.