/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:33:57,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:33:57,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:33:57,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:33:57,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:33:57,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:33:57,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:33:57,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:33:57,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:33:57,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:33:57,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:33:57,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:33:57,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:33:57,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:33:57,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:33:57,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:33:57,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:33:57,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:33:57,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:33:57,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:33:57,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:33:57,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:33:57,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:33:57,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:33:57,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:33:57,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:33:57,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:33:57,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:33:57,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:33:57,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:33:57,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:33:57,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:33:57,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:33:57,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:33:57,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:33:57,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:33:57,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:33:57,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:33:57,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:33:57,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:33:57,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:33:57,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 11:33:57,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:33:57,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:33:57,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:33:57,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:33:57,288 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:33:57,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:33:57,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:33:57,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:33:57,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:33:57,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:33:57,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:33:57,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:33:57,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:33:57,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:33:57,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:33:57,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:33:57,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:33:57,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:33:57,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:33:57,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:33:57,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:33:57,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:33:57,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:33:57,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:33:57,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:33:57,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:33:57,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:33:57,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:33:57,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:33:57,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:33:57,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:33:57,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:33:57,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:33:57,593 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:33:57,594 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:33:57,595 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label14.c [2020-10-12 11:33:57,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d86709633/4e3e1a2676c345b4828047219d4f7bac/FLAG8951de6f7 [2020-10-12 11:33:58,499 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:33:58,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label14.c [2020-10-12 11:33:58,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d86709633/4e3e1a2676c345b4828047219d4f7bac/FLAG8951de6f7 [2020-10-12 11:33:59,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d86709633/4e3e1a2676c345b4828047219d4f7bac [2020-10-12 11:33:59,046 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:33:59,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:33:59,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:33:59,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:33:59,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:33:59,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:33:59" (1/1) ... [2020-10-12 11:33:59,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126329ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:33:59, skipping insertion in model container [2020-10-12 11:33:59,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:33:59" (1/1) ... [2020-10-12 11:33:59,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:33:59,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:34:00,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:34:00,928 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:34:01,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:34:01,585 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:34:01,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:01 WrapperNode [2020-10-12 11:34:01,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:34:01,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:34:01,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:34:01,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:34:01,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:01" (1/1) ... [2020-10-12 11:34:01,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:01" (1/1) ... [2020-10-12 11:34:01,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:01" (1/1) ... [2020-10-12 11:34:01,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:01" (1/1) ... [2020-10-12 11:34:01,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:01" (1/1) ... [2020-10-12 11:34:01,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:01" (1/1) ... [2020-10-12 11:34:01,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:01" (1/1) ... [2020-10-12 11:34:01,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:34:01,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:34:01,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:34:01,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:34:01,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:34:01,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:34:01,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:34:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:34:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:34:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:34:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:34:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:34:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:34:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:34:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:34:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:34:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:34:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:34:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:34:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:34:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:34:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:34:06,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:34:06,038 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:34:06,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:34:06 BoogieIcfgContainer [2020-10-12 11:34:06,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:34:06,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:34:06,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:34:06,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:34:06,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:33:59" (1/3) ... [2020-10-12 11:34:06,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17382d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:34:06, skipping insertion in model container [2020-10-12 11:34:06,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:01" (2/3) ... [2020-10-12 11:34:06,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17382d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:34:06, skipping insertion in model container [2020-10-12 11:34:06,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:34:06" (3/3) ... [2020-10-12 11:34:06,067 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label14.c [2020-10-12 11:34:06,078 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:34:06,095 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:34:06,109 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:34:06,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:34:06,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:34:06,143 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:34:06,143 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:34:06,143 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:34:06,143 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:34:06,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:34:06,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:34:06,179 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-12 11:34:06,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2020-10-12 11:34:06,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:34:06,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:34:06,224 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:34:06,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:34:06,231 INFO L82 PathProgramCache]: Analyzing trace with hash -600416637, now seen corresponding path program 1 times [2020-10-12 11:34:06,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:34:06,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240844193] [2020-10-12 11:34:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:34:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:10,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:12,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:12,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 802 [2020-10-12 11:34:12,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:34:12,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-12 11:34:12,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:12,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 11:34:12,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:34:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-12 11:34:12,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:34:13,801 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-12 11:34:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:34:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:14,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:14,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:14,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:34:14,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:14,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:34:14,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:34:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:34:14,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:34:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:34:19,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240844193] [2020-10-12 11:34:19,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:34:19,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 11:34:19,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124060119] [2020-10-12 11:34:19,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 11:34:19,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:34:19,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 11:34:19,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-12 11:34:19,228 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-12 11:34:19,859 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:34:20,436 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 11:34:22,594 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-12 11:34:22,970 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-12 11:34:25,021 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-12 11:34:26,096 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2020-10-12 11:34:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:34:35,179 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-12 11:34:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:34:35,186 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 788 [2020-10-12 11:34:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:34:35,266 INFO L225 Difference]: With dead ends: 2548 [2020-10-12 11:34:35,266 INFO L226 Difference]: Without dead ends: 1580 [2020-10-12 11:34:35,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 11:34:35,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-12 11:34:35,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-12 11:34:35,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-12 11:34:35,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-12 11:34:35,485 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 788 [2020-10-12 11:34:35,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:34:35,489 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-12 11:34:35,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 11:34:35,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-12 11:34:35,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-12 11:34:35,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:34:35,528 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:34:35,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:34:35,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:34:35,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:34:35,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1996776468, now seen corresponding path program 1 times [2020-10-12 11:34:35,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:34:35,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350409108] [2020-10-12 11:34:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:34:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:35,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:36,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:40,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:40,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 823 [2020-10-12 11:34:40,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:34:40,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 11:34:40,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:34:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 11:34:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-12 11:34:40,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:34:42,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:34:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:42,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:42,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:34:42,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:42,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:34:42,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:42,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:34:42,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:42,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:34:42,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:42,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:34:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:42,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:42,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:42,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:34:42,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 11:34:42,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:34:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:34:42,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:34:46,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350409108] [2020-10-12 11:34:46,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:34:46,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:34:46,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278522252] [2020-10-12 11:34:46,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:34:46,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:34:46,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:34:46,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:34:46,770 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-12 11:34:47,136 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:34:47,426 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:34:51,546 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 92 [2020-10-12 11:34:52,175 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 11:34:53,120 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-12 11:35:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:35:02,002 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-12 11:35:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:35:02,003 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 807 [2020-10-12 11:35:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:35:02,016 INFO L225 Difference]: With dead ends: 3123 [2020-10-12 11:35:02,016 INFO L226 Difference]: Without dead ends: 2276 [2020-10-12 11:35:02,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:35:02,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-12 11:35:02,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-12 11:35:02,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-12 11:35:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-12 11:35:02,076 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 807 [2020-10-12 11:35:02,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:35:02,078 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-12 11:35:02,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:35:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-12 11:35:02,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-10-12 11:35:02,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:35:02,102 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:35:02,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:35:02,102 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:35:02,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:35:02,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1667356562, now seen corresponding path program 1 times [2020-10-12 11:35:02,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:35:02,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661207855] [2020-10-12 11:35:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:35:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:02,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:03,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:04,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:07,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:07,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 830 [2020-10-12 11:35:07,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:35:07,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5162 [2020-10-12 11:35:07,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:07,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:35:07,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 11:35:07,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-12 11:35:07,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:08,998 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-12 11:35:09,125 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-12 11:35:09,511 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-12 11:35:09,648 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2020-10-12 11:35:10,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:35:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:10,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:10,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:10,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:35:10,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:10,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:35:10,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:35:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:35:10,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:35:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:10,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:10,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:10,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:35:10,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:10,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 11:35:10,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:10,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:35:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 11:35:10,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:35:14,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661207855] [2020-10-12 11:35:14,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:35:14,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:35:14,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337615633] [2020-10-12 11:35:14,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:35:14,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:35:14,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:35:14,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:35:14,413 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-12 11:35:14,938 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:35:15,117 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-12 11:35:20,271 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2020-10-12 11:35:21,250 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2020-10-12 11:35:21,575 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-12 11:35:21,914 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2020-10-12 11:35:22,453 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2020-10-12 11:35:23,976 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-10-12 11:35:28,611 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-12 11:35:29,069 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-12 11:35:29,274 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-12 11:35:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:35:35,402 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-12 11:35:35,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:35:35,404 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 814 [2020-10-12 11:35:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:35:35,417 INFO L225 Difference]: With dead ends: 4329 [2020-10-12 11:35:35,417 INFO L226 Difference]: Without dead ends: 2786 [2020-10-12 11:35:35,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2020-10-12 11:35:35,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-12 11:35:35,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-12 11:35:35,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-12 11:35:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-12 11:35:35,485 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 814 [2020-10-12 11:35:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:35:35,486 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-12 11:35:35,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:35:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-12 11:35:35,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2020-10-12 11:35:35,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:35:35,499 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:35:35,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:35:35,499 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:35:35,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:35:35,500 INFO L82 PathProgramCache]: Analyzing trace with hash -975014553, now seen corresponding path program 1 times [2020-10-12 11:35:35,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:35:35,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317744036] [2020-10-12 11:35:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:35:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:37,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:39,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:39,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 842 [2020-10-12 11:35:39,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:35:39,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3859 [2020-10-12 11:35:39,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:39,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:35:39,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 11:35:39,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-12 11:35:39,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:40,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:35:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:40,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:40,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:40,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:35:40,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:40,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:35:40,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:35:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:35:40,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:40,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:35:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:40,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:40,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:40,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:35:40,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:40,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:35:40,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:40,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:35:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:35:40,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:40,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:35:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:40,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:40,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:40,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:35:40,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:40,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:35:40,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:40,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:35:40,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:40,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:35:40,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 11:35:46,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317744036] [2020-10-12 11:35:46,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:35:46,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:35:46,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547047303] [2020-10-12 11:35:46,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:35:46,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:35:46,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:35:46,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:35:46,113 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 5 states. [2020-10-12 11:35:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:35:56,186 INFO L93 Difference]: Finished difference Result 5625 states and 7934 transitions. [2020-10-12 11:35:56,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:35:56,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 824 [2020-10-12 11:35:56,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:35:56,200 INFO L225 Difference]: With dead ends: 5625 [2020-10-12 11:35:56,200 INFO L226 Difference]: Without dead ends: 2715 [2020-10-12 11:35:56,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:35:56,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2020-10-12 11:35:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2715. [2020-10-12 11:35:56,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2715 states. [2020-10-12 11:35:56,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 2983 transitions. [2020-10-12 11:35:56,283 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 2983 transitions. Word has length 824 [2020-10-12 11:35:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:35:56,283 INFO L479 AbstractCegarLoop]: Abstraction has 2715 states and 2983 transitions. [2020-10-12 11:35:56,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:35:56,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 2983 transitions. [2020-10-12 11:35:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-10-12 11:35:56,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:35:56,298 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:35:56,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:35:56,298 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:35:56,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:35:56,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1882164623, now seen corresponding path program 1 times [2020-10-12 11:35:56,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:35:56,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041516721] [2020-10-12 11:35:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:35:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:56,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:57,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:01,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:01,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 950 [2020-10-12 11:36:01,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:36:01,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 11:36:01,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:01,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 11:36:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:36:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 944 [2020-10-12 11:36:01,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:01,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:01,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:01,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:01,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:01,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:36:01,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:36:01,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:36:01,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:01,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:01,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:01,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:01,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 11:36:01,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:36:01,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:36:01,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:02,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:02,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:02,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 11:36:02,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:02,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-12 11:36:02,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 11:36:02,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-12 11:36:02,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041516721] [2020-10-12 11:36:02,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:02,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:36:02,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776073557] [2020-10-12 11:36:02,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:36:02,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:02,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:36:02,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:36:02,924 INFO L87 Difference]: Start difference. First operand 2715 states and 2983 transitions. Second operand 6 states. [2020-10-12 11:36:08,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:08,537 INFO L93 Difference]: Finished difference Result 5576 states and 6383 transitions. [2020-10-12 11:36:08,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:36:08,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 932 [2020-10-12 11:36:08,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:08,557 INFO L225 Difference]: With dead ends: 5576 [2020-10-12 11:36:08,557 INFO L226 Difference]: Without dead ends: 3594 [2020-10-12 11:36:08,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:36:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2020-10-12 11:36:08,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3571. [2020-10-12 11:36:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3571 states. [2020-10-12 11:36:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 3952 transitions. [2020-10-12 11:36:08,641 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 3952 transitions. Word has length 932 [2020-10-12 11:36:08,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:08,642 INFO L479 AbstractCegarLoop]: Abstraction has 3571 states and 3952 transitions. [2020-10-12 11:36:08,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:36:08,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 3952 transitions. [2020-10-12 11:36:08,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2020-10-12 11:36:08,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:08,658 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:36:08,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:36:08,658 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:08,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:08,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1476509424, now seen corresponding path program 1 times [2020-10-12 11:36:08,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:08,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772382627] [2020-10-12 11:36:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:08,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:09,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:11,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:13,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:13,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:13,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 967 [2020-10-12 11:36:13,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:36:13,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-12 11:36:13,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:36:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-12 11:36:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 754 [2020-10-12 11:36:13,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:14,929 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 36 [2020-10-12 11:36:15,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:15,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:15,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:15,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:15,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:36:15,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:15,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:15,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:15,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:15,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:15,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:15,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:36:15,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:15,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:15,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:15,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:15,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:15,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 11:36:15,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 11:36:15,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:15,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-12 11:36:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:15,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:15,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:36:15,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:15,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:36:15,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:36:15,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-12 11:36:21,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772382627] [2020-10-12 11:36:21,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:21,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:36:21,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948053829] [2020-10-12 11:36:21,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:36:21,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:21,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:36:21,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:36:21,401 INFO L87 Difference]: Start difference. First operand 3571 states and 3952 transitions. Second operand 19 states. [2020-10-12 11:36:22,288 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-12 11:36:22,817 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-12 11:36:23,524 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:36:24,753 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:36:33,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:33,800 INFO L93 Difference]: Finished difference Result 7189 states and 8217 transitions. [2020-10-12 11:36:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 11:36:33,801 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 947 [2020-10-12 11:36:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:33,817 INFO L225 Difference]: With dead ends: 7189 [2020-10-12 11:36:33,817 INFO L226 Difference]: Without dead ends: 4318 [2020-10-12 11:36:33,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:36:33,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4318 states. [2020-10-12 11:36:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4318 to 4299. [2020-10-12 11:36:33,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4299 states. [2020-10-12 11:36:33,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4299 states to 4299 states and 4690 transitions. [2020-10-12 11:36:33,920 INFO L78 Accepts]: Start accepts. Automaton has 4299 states and 4690 transitions. Word has length 947 [2020-10-12 11:36:33,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:33,921 INFO L479 AbstractCegarLoop]: Abstraction has 4299 states and 4690 transitions. [2020-10-12 11:36:33,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:36:33,922 INFO L276 IsEmpty]: Start isEmpty. Operand 4299 states and 4690 transitions. [2020-10-12 11:36:33,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2020-10-12 11:36:33,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:33,939 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:36:33,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:36:33,940 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:33,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:33,940 INFO L82 PathProgramCache]: Analyzing trace with hash -52378896, now seen corresponding path program 1 times [2020-10-12 11:36:33,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:33,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749682116] [2020-10-12 11:36:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:34,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:34,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:39,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:39,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-12 11:36:39,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 11:36:39,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:36:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-12 11:36:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 516 [2020-10-12 11:36:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:40,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:40,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:40,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:40,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:40,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:36:40,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:40,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:40,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:40,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:40,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:40,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:40,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:40,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:36:40,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:40,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:40,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:40,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:40,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 11:36:40,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:40,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 11:36:40,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:40,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:40,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-12 11:36:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:40,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:40,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 11:36:40,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:40,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:36:40,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 11:36:40,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 169 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 11:36:44,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749682116] [2020-10-12 11:36:44,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:44,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:36:44,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183667158] [2020-10-12 11:36:44,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:36:44,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:44,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:36:44,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:36:44,132 INFO L87 Difference]: Start difference. First operand 4299 states and 4690 transitions. Second operand 17 states. [2020-10-12 11:36:44,993 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:36:46,159 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 11:36:48,188 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-12 11:36:51,713 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-12 11:36:53,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:53,494 INFO L93 Difference]: Finished difference Result 8385 states and 9351 transitions. [2020-10-12 11:36:53,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:36:53,495 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 963 [2020-10-12 11:36:53,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:53,509 INFO L225 Difference]: With dead ends: 8385 [2020-10-12 11:36:53,509 INFO L226 Difference]: Without dead ends: 4620 [2020-10-12 11:36:53,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:36:53,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4620 states. [2020-10-12 11:36:53,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4620 to 4609. [2020-10-12 11:36:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4609 states. [2020-10-12 11:36:53,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 5003 transitions. [2020-10-12 11:36:53,608 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 5003 transitions. Word has length 963 [2020-10-12 11:36:53,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:53,609 INFO L479 AbstractCegarLoop]: Abstraction has 4609 states and 5003 transitions. [2020-10-12 11:36:53,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:36:53,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 5003 transitions. [2020-10-12 11:36:53,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-10-12 11:36:53,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:53,627 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:36:53,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:36:53,627 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:53,628 INFO L82 PathProgramCache]: Analyzing trace with hash -469468402, now seen corresponding path program 1 times [2020-10-12 11:36:53,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:53,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990622635] [2020-10-12 11:36:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:53,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:54,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:58,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:58,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1000 [2020-10-12 11:36:58,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:58,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 11:36:58,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:36:58,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-12 11:36:58,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 621 [2020-10-12 11:36:58,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:00,891 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2020-10-12 11:37:01,034 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 40 [2020-10-12 11:37:01,261 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 45 [2020-10-12 11:37:01,459 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 38 [2020-10-12 11:37:01,614 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-12 11:37:01,789 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2020-10-12 11:37:02,050 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 49 [2020-10-12 11:37:02,277 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 44 [2020-10-12 11:37:02,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:37:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:02,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:02,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:02,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:37:02,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:37:02,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:02,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:02,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:37:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:02,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:02,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:02,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:37:02,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:02,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:37:02,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:02,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:37:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:02,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:02,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:02,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 11:37:02,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:02,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:37:02,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:02,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:02,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-12 11:37:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:02,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:02,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:02,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 11:37:02,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:02,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 11:37:02,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:37:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 11:37:02,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 186 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-12 11:37:08,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990622635] [2020-10-12 11:37:08,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:37:08,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:37:08,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660344169] [2020-10-12 11:37:08,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:37:08,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:37:08,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:37:08,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:37:08,744 INFO L87 Difference]: Start difference. First operand 4609 states and 5003 transitions. Second operand 17 states. [2020-10-12 11:37:09,691 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:37:09,860 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-12 11:37:10,408 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 11:37:13,409 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 11:37:13,583 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:37:14,864 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2020-10-12 11:37:15,887 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-10-12 11:37:17,586 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 11:37:17,758 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-12 11:37:18,364 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-10-12 11:37:20,163 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 98 [2020-10-12 11:37:21,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:37:21,030 INFO L93 Difference]: Finished difference Result 9110 states and 10112 transitions. [2020-10-12 11:37:21,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:37:21,030 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 980 [2020-10-12 11:37:21,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:37:21,048 INFO L225 Difference]: With dead ends: 9110 [2020-10-12 11:37:21,049 INFO L226 Difference]: Without dead ends: 4961 [2020-10-12 11:37:21,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:37:21,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4961 states. [2020-10-12 11:37:21,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4961 to 4961. [2020-10-12 11:37:21,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4961 states. [2020-10-12 11:37:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4961 states to 4961 states and 5358 transitions. [2020-10-12 11:37:21,157 INFO L78 Accepts]: Start accepts. Automaton has 4961 states and 5358 transitions. Word has length 980 [2020-10-12 11:37:21,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:37:21,158 INFO L479 AbstractCegarLoop]: Abstraction has 4961 states and 5358 transitions. [2020-10-12 11:37:21,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:37:21,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4961 states and 5358 transitions. [2020-10-12 11:37:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2020-10-12 11:37:21,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:21,180 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:37:21,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:37:21,180 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:21,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:21,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1725435370, now seen corresponding path program 1 times [2020-10-12 11:37:21,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:21,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985564958] [2020-10-12 11:37:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:21,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:22,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:25,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:26,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:26,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1060 [2020-10-12 11:37:26,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:37:26,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-12 11:37:26,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:37:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-12 11:37:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 750 [2020-10-12 11:37:26,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:28,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:37:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:28,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:28,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:28,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:37:28,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:28,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:37:28,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:28,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:28,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:37:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:28,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:28,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:37:28,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:28,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:37:28,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:28,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:28,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:37:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:28,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:28,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:28,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 11:37:28,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:37:28,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:28,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-12 11:37:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:28,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:28,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:28,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 11:37:28,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:28,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 11:37:28,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:37:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:28,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 11:37:28,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-12 11:37:33,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985564958] [2020-10-12 11:37:33,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:37:33,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:37:33,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612149383] [2020-10-12 11:37:33,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:37:33,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:37:33,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:37:33,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:37:33,659 INFO L87 Difference]: Start difference. First operand 4961 states and 5358 transitions. Second operand 19 states. [2020-10-12 11:37:35,042 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-12 11:37:35,199 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:37:36,252 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:37:38,315 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 11:37:39,505 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:37:40,476 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-12 11:37:43,197 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 88 [2020-10-12 11:37:43,828 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 80