/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:35:51,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:35:51,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:35:51,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:35:51,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:35:51,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:35:51,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:35:51,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:35:51,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:35:51,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:35:51,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:35:51,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:35:51,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:35:51,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:35:51,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:35:51,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:35:51,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:35:51,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:35:51,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:35:51,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:35:51,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:35:51,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:35:51,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:35:51,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:35:51,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:35:51,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:35:51,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:35:51,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:35:51,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:35:51,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:35:51,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:35:51,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:35:51,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:35:51,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:35:52,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:35:52,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:35:52,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:35:52,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:35:52,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:35:52,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:35:52,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:35:52,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 03:35:52,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:35:52,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:35:52,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:35:52,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:35:52,053 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:35:52,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:35:52,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:35:52,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:35:52,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:35:52,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:35:52,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:35:52,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:35:52,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:35:52,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:35:52,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:35:52,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:35:52,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:35:52,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:35:52,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:35:52,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:35:52,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:35:52,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:35:52,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:35:52,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:35:52,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:35:52,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:35:52,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:35:52,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:35:52,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:35:52,059 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:35:52,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:35:52,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:35:52,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:35:52,391 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:35:52,391 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:35:52,392 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2020-10-14 03:35:52,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5eed7fa1/a576a5b142ce4d62ae3f61341582c1f4/FLAGa84d2bc9b [2020-10-14 03:35:53,205 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:35:53,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2020-10-14 03:35:53,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5eed7fa1/a576a5b142ce4d62ae3f61341582c1f4/FLAGa84d2bc9b [2020-10-14 03:35:53,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5eed7fa1/a576a5b142ce4d62ae3f61341582c1f4 [2020-10-14 03:35:53,322 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:35:53,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:35:53,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:35:53,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:35:53,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:35:53,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:35:53" (1/1) ... [2020-10-14 03:35:53,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a7194df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:53, skipping insertion in model container [2020-10-14 03:35:53,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:35:53" (1/1) ... [2020-10-14 03:35:53,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:35:53,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:35:54,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:35:54,616 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:35:55,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:35:55,038 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:35:55,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:55 WrapperNode [2020-10-14 03:35:55,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:35:55,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:35:55,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:35:55,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:35:55,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:55" (1/1) ... [2020-10-14 03:35:55,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:55" (1/1) ... [2020-10-14 03:35:55,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:55" (1/1) ... [2020-10-14 03:35:55,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:55" (1/1) ... [2020-10-14 03:35:55,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:55" (1/1) ... [2020-10-14 03:35:55,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:55" (1/1) ... [2020-10-14 03:35:55,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:55" (1/1) ... [2020-10-14 03:35:55,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:35:55,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:35:55,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:35:55,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:35:55,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:35:55,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:35:55,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:35:55,318 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:35:55,318 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:35:55,318 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:35:55,318 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:35:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:35:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:35:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:35:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:35:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:35:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:35:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:36:01,208 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:36:01,208 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:36:01,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:36:01 BoogieIcfgContainer [2020-10-14 03:36:01,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:36:01,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:36:01,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:36:01,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:36:01,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:35:53" (1/3) ... [2020-10-14 03:36:01,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe2b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:36:01, skipping insertion in model container [2020-10-14 03:36:01,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:35:55" (2/3) ... [2020-10-14 03:36:01,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe2b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:36:01, skipping insertion in model container [2020-10-14 03:36:01,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:36:01" (3/3) ... [2020-10-14 03:36:01,226 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label53.c [2020-10-14 03:36:01,237 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:36:01,246 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:36:01,261 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:36:01,289 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:36:01,289 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:36:01,289 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:36:01,289 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:36:01,289 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:36:01,289 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:36:01,290 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:36:01,290 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:36:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:36:01,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 03:36:01,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:01,327 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] [2020-10-14 03:36:01,327 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:01,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:01,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1056547171, now seen corresponding path program 1 times [2020-10-14 03:36:01,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:01,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370725662] [2020-10-14 03:36:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:01,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:01,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:01,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 03:36:01,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:01,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-14 03:36:01,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:01,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:36:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:36:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 03:36:01,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:36:02,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:02,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:02,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:02,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:02,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:02,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 03:36:02,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:02,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:02,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:02,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:36:02,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:36:02,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370725662] [2020-10-14 03:36:02,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:36:02,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:36:02,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654014100] [2020-10-14 03:36:02,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:36:02,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:02,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:36:02,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:36:02,216 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:36:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:10,864 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 03:36:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:36:10,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 03:36:10,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:10,893 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 03:36:10,893 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 03:36:10,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:36:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 03:36:11,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 03:36:11,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 03:36:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 03:36:11,017 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 53 [2020-10-14 03:36:11,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:11,018 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 03:36:11,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:36:11,018 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 03:36:11,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 03:36:11,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:11,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:36:11,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:36:11,025 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:11,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:11,026 INFO L82 PathProgramCache]: Analyzing trace with hash 702573530, now seen corresponding path program 1 times [2020-10-14 03:36:11,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:11,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640895885] [2020-10-14 03:36:11,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:11,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:11,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:13,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:13,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 03:36:13,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:36:13,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2670 [2020-10-14 03:36:13,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:13,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:13,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:13,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:36:13,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 03:36:13,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:36:13,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:13,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:13,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:13,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:13,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:13,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:36:13,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:13,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:13,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:13,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:13,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:14,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:14,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:36:14,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:14,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 03:36:14,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:14,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:14,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:14,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:36:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:36:14,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640895885] [2020-10-14 03:36:14,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:14,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:36:14,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217301965] [2020-10-14 03:36:14,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:36:14,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:14,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:36:14,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:36:14,083 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 6 states. [2020-10-14 03:36:21,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:21,917 INFO L93 Difference]: Finished difference Result 2635 states and 3904 transitions. [2020-10-14 03:36:21,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:36:21,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-14 03:36:21,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:21,934 INFO L225 Difference]: With dead ends: 2635 [2020-10-14 03:36:21,935 INFO L226 Difference]: Without dead ends: 1950 [2020-10-14 03:36:21,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:36:21,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2020-10-14 03:36:22,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1944. [2020-10-14 03:36:22,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2020-10-14 03:36:22,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2601 transitions. [2020-10-14 03:36:22,014 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2601 transitions. Word has length 122 [2020-10-14 03:36:22,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:22,014 INFO L479 AbstractCegarLoop]: Abstraction has 1944 states and 2601 transitions. [2020-10-14 03:36:22,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:36:22,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2601 transitions. [2020-10-14 03:36:22,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-14 03:36:22,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:22,028 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:36:22,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:36:22,028 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:22,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:22,029 INFO L82 PathProgramCache]: Analyzing trace with hash -17389426, now seen corresponding path program 1 times [2020-10-14 03:36:22,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:22,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321069044] [2020-10-14 03:36:22,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:22,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:22,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:22,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:24,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:24,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:25,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:27,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:27,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:27,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-14 03:36:27,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 03:36:27,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-10-14 03:36:27,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:27,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:27,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 262 [2020-10-14 03:36:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:36:27,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:27,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:27,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:27,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:27,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:27,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:27,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:36:27,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:27,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:27,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:27,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:27,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:27,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:27,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:27,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:27,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:27,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:36:27,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:27,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 03:36:27,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:27,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:27,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:27,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:36:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:27,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:27,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:27,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:36:27,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:27,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-14 03:36:27,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:27,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-14 03:36:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:36:27,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 03:36:27,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321069044] [2020-10-14 03:36:27,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:36:27,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:36:27,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096549969] [2020-10-14 03:36:27,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:36:27,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:27,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:36:27,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:36:27,896 INFO L87 Difference]: Start difference. First operand 1944 states and 2601 transitions. Second operand 5 states. [2020-10-14 03:36:34,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:34,013 INFO L93 Difference]: Finished difference Result 4194 states and 5728 transitions. [2020-10-14 03:36:34,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:36:34,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-14 03:36:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:34,033 INFO L225 Difference]: With dead ends: 4194 [2020-10-14 03:36:34,034 INFO L226 Difference]: Without dead ends: 2256 [2020-10-14 03:36:34,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:36:34,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2020-10-14 03:36:34,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2252. [2020-10-14 03:36:34,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2252 states. [2020-10-14 03:36:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3117 transitions. [2020-10-14 03:36:34,126 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3117 transitions. Word has length 305 [2020-10-14 03:36:34,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:34,130 INFO L479 AbstractCegarLoop]: Abstraction has 2252 states and 3117 transitions. [2020-10-14 03:36:34,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:36:34,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3117 transitions. [2020-10-14 03:36:34,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-14 03:36:34,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:34,144 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 03:36:34,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:36:34,144 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:34,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:34,145 INFO L82 PathProgramCache]: Analyzing trace with hash 539848426, now seen corresponding path program 1 times [2020-10-14 03:36:34,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:34,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945966000] [2020-10-14 03:36:34,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:34,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:34,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:34,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:35,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:37,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:37,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:39,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:39,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-14 03:36:39,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:36:39,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 03:36:39,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:39,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:39,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-14 03:36:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:36:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:39,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:39,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:39,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:39,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:36:39,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:39,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:39,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:39,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:39,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:39,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:39,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:36:39,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:39,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 03:36:39,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:39,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:39,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:39,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:39,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:39,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:39,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:36:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:39,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:39,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:36:39,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:39,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:36:39,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:39,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:39,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:39,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:36:39,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:39,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-14 03:36:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:39,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:39,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:36:39,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:39,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 03:36:39,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:39,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:39,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:39,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:36:39,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:39,922 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 03:36:39,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945966000] [2020-10-14 03:36:39,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:39,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:36:39,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136125468] [2020-10-14 03:36:39,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:36:39,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:39,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:36:39,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:36:39,927 INFO L87 Difference]: Start difference. First operand 2252 states and 3117 transitions. Second operand 7 states. [2020-10-14 03:36:51,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:51,420 INFO L93 Difference]: Finished difference Result 6082 states and 8513 transitions. [2020-10-14 03:36:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:36:51,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-14 03:36:51,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:51,447 INFO L225 Difference]: With dead ends: 6082 [2020-10-14 03:36:51,447 INFO L226 Difference]: Without dead ends: 3836 [2020-10-14 03:36:51,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:36:51,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3836 states. [2020-10-14 03:36:51,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3836 to 3821. [2020-10-14 03:36:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3821 states. [2020-10-14 03:36:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 5182 transitions. [2020-10-14 03:36:51,579 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 5182 transitions. Word has length 307 [2020-10-14 03:36:51,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:51,580 INFO L479 AbstractCegarLoop]: Abstraction has 3821 states and 5182 transitions. [2020-10-14 03:36:51,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:36:51,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 5182 transitions. [2020-10-14 03:36:51,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-14 03:36:51,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:51,588 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 03:36:51,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:36:51,589 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:51,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:51,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1565457239, now seen corresponding path program 1 times [2020-10-14 03:36:51,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:51,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111850448] [2020-10-14 03:36:51,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:51,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:51,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:51,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:52,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:53,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:53,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:56,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:56,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:56,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-14 03:36:56,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 03:36:56,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 03:36:56,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:56,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-14 03:36:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:36:56,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:56,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:56,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:56,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:56,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:56,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:36:56,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:56,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:56,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:36:56,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:56,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:56,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:56,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:36:56,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:56,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 03:36:56,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:56,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:56,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:36:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:56,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:56,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:56,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:36:56,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:56,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 03:36:56,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:56,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:36:56,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:57,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-14 03:36:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:57,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:57,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:57,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:36:57,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:57,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 03:36:57,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:57,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:57,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:57,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:57,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:36:57,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 03:36:57,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111850448] [2020-10-14 03:36:57,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:57,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:36:57,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648807462] [2020-10-14 03:36:57,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:36:57,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:57,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:36:57,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:36:57,352 INFO L87 Difference]: Start difference. First operand 3821 states and 5182 transitions. Second operand 7 states. [2020-10-14 03:37:08,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:08,520 INFO L93 Difference]: Finished difference Result 9888 states and 13863 transitions. [2020-10-14 03:37:08,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:37:08,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-10-14 03:37:08,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:08,558 INFO L225 Difference]: With dead ends: 9888 [2020-10-14 03:37:08,559 INFO L226 Difference]: Without dead ends: 6689 [2020-10-14 03:37:08,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:37:08,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6689 states. [2020-10-14 03:37:08,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6689 to 6363. [2020-10-14 03:37:08,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6363 states. [2020-10-14 03:37:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6363 states to 6363 states and 8613 transitions. [2020-10-14 03:37:08,752 INFO L78 Accepts]: Start accepts. Automaton has 6363 states and 8613 transitions. Word has length 326 [2020-10-14 03:37:08,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:08,752 INFO L479 AbstractCegarLoop]: Abstraction has 6363 states and 8613 transitions. [2020-10-14 03:37:08,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:37:08,753 INFO L276 IsEmpty]: Start isEmpty. Operand 6363 states and 8613 transitions. [2020-10-14 03:37:08,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-14 03:37:08,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:08,762 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 03:37:08,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:37:08,762 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:08,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:08,763 INFO L82 PathProgramCache]: Analyzing trace with hash 303596321, now seen corresponding path program 1 times [2020-10-14 03:37:08,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:08,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641690747] [2020-10-14 03:37:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:08,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:08,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:09,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:10,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:13,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:13,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-14 03:37:13,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:37:13,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 03:37:13,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:13,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-14 03:37:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:37:13,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:13,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:13,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:13,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:13,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:13,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:13,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:37:13,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:13,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:13,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:13,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:13,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:13,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:13,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:13,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:13,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:13,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:37:13,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:13,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 03:37:13,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:13,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:13,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:13,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:13,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:13,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:14,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:37:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:14,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:14,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:37:14,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:14,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 03:37:14,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:14,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:14,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:14,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:14,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:37:14,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:14,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-14 03:37:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:14,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:14,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:14,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:37:14,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:14,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 03:37:14,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:14,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:14,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:37:14,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:37:14,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 03:37:14,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641690747] [2020-10-14 03:37:14,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:14,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:37:14,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291706918] [2020-10-14 03:37:14,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:37:14,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:14,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:37:14,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:37:14,717 INFO L87 Difference]: Start difference. First operand 6363 states and 8613 transitions. Second operand 7 states. [2020-10-14 03:37:25,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:25,883 INFO L93 Difference]: Finished difference Result 16708 states and 24734 transitions. [2020-10-14 03:37:25,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:37:25,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2020-10-14 03:37:25,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:25,958 INFO L225 Difference]: With dead ends: 16708 [2020-10-14 03:37:25,958 INFO L226 Difference]: Without dead ends: 10298 [2020-10-14 03:37:25,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:37:25,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10298 states. [2020-10-14 03:37:26,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10298 to 9781. [2020-10-14 03:37:26,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9781 states. [2020-10-14 03:37:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9781 states to 9781 states and 12053 transitions. [2020-10-14 03:37:26,356 INFO L78 Accepts]: Start accepts. Automaton has 9781 states and 12053 transitions. Word has length 330 [2020-10-14 03:37:26,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:26,357 INFO L479 AbstractCegarLoop]: Abstraction has 9781 states and 12053 transitions. [2020-10-14 03:37:26,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:37:26,357 INFO L276 IsEmpty]: Start isEmpty. Operand 9781 states and 12053 transitions. [2020-10-14 03:37:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-14 03:37:26,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:26,367 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:37:26,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:37:26,368 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:26,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:26,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1106981132, now seen corresponding path program 1 times [2020-10-14 03:37:26,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:26,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815282248] [2020-10-14 03:37:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:29,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:29,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-14 03:37:29,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:37:29,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3456 [2020-10-14 03:37:29,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:29,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:37:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:37:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:30,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:30,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:30,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:30,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:30,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:30,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:37:30,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:30,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:30,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:30,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:30,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:30,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:30,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:37:30,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 03:37:30,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:30,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:37:30,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:30,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:37:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:30,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:30,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:37:30,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:30,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 03:37:30,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:30,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:30,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:30,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:37:30,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:37:30,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:37:30,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815282248] [2020-10-14 03:37:30,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:30,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:37:30,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418836507] [2020-10-14 03:37:30,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:37:30,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:30,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:37:30,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:37:30,868 INFO L87 Difference]: Start difference. First operand 9781 states and 12053 transitions. Second operand 8 states. [2020-10-14 03:37:42,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:42,728 INFO L93 Difference]: Finished difference Result 25545 states and 32078 transitions. [2020-10-14 03:37:42,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 03:37:42,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 333 [2020-10-14 03:37:42,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:42,809 INFO L225 Difference]: With dead ends: 25545 [2020-10-14 03:37:42,810 INFO L226 Difference]: Without dead ends: 16077 [2020-10-14 03:37:42,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 03:37:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16077 states. [2020-10-14 03:37:43,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16077 to 13887. [2020-10-14 03:37:43,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13887 states. [2020-10-14 03:37:43,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13887 states to 13887 states and 17040 transitions. [2020-10-14 03:37:43,290 INFO L78 Accepts]: Start accepts. Automaton has 13887 states and 17040 transitions. Word has length 333 [2020-10-14 03:37:43,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:43,292 INFO L479 AbstractCegarLoop]: Abstraction has 13887 states and 17040 transitions. [2020-10-14 03:37:43,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:37:43,292 INFO L276 IsEmpty]: Start isEmpty. Operand 13887 states and 17040 transitions. [2020-10-14 03:37:43,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-14 03:37:43,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:43,305 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 03:37:43,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:37:43,306 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:43,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:43,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1305424621, now seen corresponding path program 1 times [2020-10-14 03:37:43,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:43,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509601817] [2020-10-14 03:37:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:43,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:44,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:47,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:48,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:48,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-14 03:37:48,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:37:48,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 03:37:48,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:48,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:48,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:37:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 03:37:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:48,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:48,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:48,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:48,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:37:48,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:48,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:48,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:48,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:48,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:48,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:48,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:37:48,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:48,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 03:37:48,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:48,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:48,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:37:48,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:48,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:37:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:48,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:48,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:37:48,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:48,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 03:37:48,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:48,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:48,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:48,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:37:48,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:37:48,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:48,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-14 03:37:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:48,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:48,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:48,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:37:48,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 03:37:48,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:48,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 03:37:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:49,097 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 234 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 03:37:49,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509601817] [2020-10-14 03:37:49,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:49,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:37:49,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309928647] [2020-10-14 03:37:49,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:37:49,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:49,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:37:49,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:37:49,100 INFO L87 Difference]: Start difference. First operand 13887 states and 17040 transitions. Second operand 7 states. [2020-10-14 03:37:59,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:59,817 INFO L93 Difference]: Finished difference Result 31858 states and 39916 transitions. [2020-10-14 03:37:59,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:37:59,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 344 [2020-10-14 03:37:59,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:59,895 INFO L225 Difference]: With dead ends: 31858 [2020-10-14 03:37:59,895 INFO L226 Difference]: Without dead ends: 17973 [2020-10-14 03:37:59,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:37:59,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17973 states. [2020-10-14 03:38:00,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17973 to 15491. [2020-10-14 03:38:00,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15491 states. [2020-10-14 03:38:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15491 states to 15491 states and 19038 transitions. [2020-10-14 03:38:00,395 INFO L78 Accepts]: Start accepts. Automaton has 15491 states and 19038 transitions. Word has length 344 [2020-10-14 03:38:00,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:00,396 INFO L479 AbstractCegarLoop]: Abstraction has 15491 states and 19038 transitions. [2020-10-14 03:38:00,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:38:00,396 INFO L276 IsEmpty]: Start isEmpty. Operand 15491 states and 19038 transitions. [2020-10-14 03:38:00,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-14 03:38:00,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:00,411 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2020-10-14 03:38:00,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:38:00,412 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:00,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:00,413 INFO L82 PathProgramCache]: Analyzing trace with hash 515749019, now seen corresponding path program 1 times [2020-10-14 03:38:00,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:00,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798681753] [2020-10-14 03:38:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:00,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:00,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:00,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:01,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:02,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:02,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:02,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:05,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:05,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-14 03:38:05,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 03:38:05,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 03:38:05,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:05,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:38:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-14 03:38:05,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 03:38:05,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:05,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:05,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:05,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:05,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:05,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:05,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:38:05,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:05,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:05,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:05,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:05,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:38:05,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:05,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 03:38:05,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:05,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:05,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:05,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:38:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:05,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:05,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:05,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:38:05,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 03:38:05,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:05,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 03:38:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:38:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:05,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-14 03:38:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:06,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:06,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:06,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 03:38:06,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:06,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 03:38:06,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:06,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:38:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 03:38:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 353 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 03:38:06,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798681753] [2020-10-14 03:38:06,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:06,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:38:06,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031335030] [2020-10-14 03:38:06,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:38:06,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:06,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:38:06,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:38:06,311 INFO L87 Difference]: Start difference. First operand 15491 states and 19038 transitions. Second operand 8 states. [2020-10-14 03:38:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:21,936 INFO L93 Difference]: Finished difference Result 33279 states and 42672 transitions. [2020-10-14 03:38:21,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 03:38:21,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 395 [2020-10-14 03:38:21,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:22,015 INFO L225 Difference]: With dead ends: 33279 [2020-10-14 03:38:22,015 INFO L226 Difference]: Without dead ends: 17790 [2020-10-14 03:38:22,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:38:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17790 states. [2020-10-14 03:38:22,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17790 to 17375. [2020-10-14 03:38:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17375 states. [2020-10-14 03:38:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17375 states to 17375 states and 21464 transitions. [2020-10-14 03:38:22,548 INFO L78 Accepts]: Start accepts. Automaton has 17375 states and 21464 transitions. Word has length 395 [2020-10-14 03:38:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:22,549 INFO L479 AbstractCegarLoop]: Abstraction has 17375 states and 21464 transitions. [2020-10-14 03:38:22,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:38:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 17375 states and 21464 transitions. [2020-10-14 03:38:22,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-14 03:38:22,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:22,567 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2020-10-14 03:38:22,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:38:22,568 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:22,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:22,568 INFO L82 PathProgramCache]: Analyzing trace with hash 757058744, now seen corresponding path program 1 times [2020-10-14 03:38:22,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:22,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574192928] [2020-10-14 03:38:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:22,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:22,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:23,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:23,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:24,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:27,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:27,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-14 03:38:27,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 03:38:27,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 03:38:27,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:27,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-14 03:38:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 03:38:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:27,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:27,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:27,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:27,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:27,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:27,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:38:27,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:27,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:27,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:27,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:27,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:27,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:27,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:27,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:27,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:27,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:38:27,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:27,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 03:38:27,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:27,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:27,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:38:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:27,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:28,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:28,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:38:28,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:28,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 03:38:28,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:28,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:38:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:28,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-14 03:38:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:28,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:28,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:28,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:38:28,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:28,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 03:38:28,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:28,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:38:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:38:28,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 353 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 03:38:28,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574192928] [2020-10-14 03:38:28,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:28,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:38:28,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612324946] [2020-10-14 03:38:28,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:38:28,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:28,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:38:28,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:38:28,503 INFO L87 Difference]: Start difference. First operand 17375 states and 21464 transitions. Second operand 8 states. [2020-10-14 03:38:41,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:41,111 INFO L93 Difference]: Finished difference Result 37590 states and 46978 transitions. [2020-10-14 03:38:41,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:38:41,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 399 [2020-10-14 03:38:41,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:41,179 INFO L225 Difference]: With dead ends: 37590 [2020-10-14 03:38:41,179 INFO L226 Difference]: Without dead ends: 20528 [2020-10-14 03:38:41,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:38:41,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20528 states. [2020-10-14 03:38:41,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20528 to 20503. [2020-10-14 03:38:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20503 states. [2020-10-14 03:38:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20503 states to 20503 states and 25138 transitions. [2020-10-14 03:38:41,731 INFO L78 Accepts]: Start accepts. Automaton has 20503 states and 25138 transitions. Word has length 399 [2020-10-14 03:38:41,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:41,731 INFO L479 AbstractCegarLoop]: Abstraction has 20503 states and 25138 transitions. [2020-10-14 03:38:41,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:38:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 20503 states and 25138 transitions. [2020-10-14 03:38:41,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-14 03:38:41,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:41,745 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:38:41,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:38:41,745 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:41,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:41,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1474718282, now seen corresponding path program 1 times [2020-10-14 03:38:41,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:41,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851753858] [2020-10-14 03:38:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:41,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:42,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:42,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:42,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:42,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:44,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:45,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:45,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:46,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:46,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-14 03:38:46,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 03:38:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 03:38:46,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:46,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:38:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 03:38:46,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:46,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:46,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:46,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:46,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:46,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:38:46,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:46,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:46,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:46,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:46,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:46,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:46,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:47,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:47,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:38:47,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:47,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 03:38:47,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:47,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:38:47,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:47,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:38:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:47,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:47,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:47,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 03:38:47,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 03:38:47,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:47,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:38:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 03:38:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:47,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-14 03:38:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:47,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:47,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:47,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:38:47,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:47,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 03:38:47,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:47,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:38:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:47,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 234 proven. 127 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-14 03:38:47,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851753858] [2020-10-14 03:38:47,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:47,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:38:47,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891577511] [2020-10-14 03:38:47,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:38:47,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:47,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:38:47,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:38:47,431 INFO L87 Difference]: Start difference. First operand 20503 states and 25138 transitions. Second operand 7 states. [2020-10-14 03:38:59,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:59,898 INFO L93 Difference]: Finished difference Result 46622 states and 58676 transitions. [2020-10-14 03:38:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:38:59,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 410 [2020-10-14 03:38:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:59,962 INFO L225 Difference]: With dead ends: 46622 [2020-10-14 03:38:59,962 INFO L226 Difference]: Without dead ends: 21398 [2020-10-14 03:39:00,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:39:00,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21398 states. [2020-10-14 03:39:00,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21398 to 20704. [2020-10-14 03:39:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20704 states. [2020-10-14 03:39:00,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20704 states to 20704 states and 23546 transitions. [2020-10-14 03:39:00,385 INFO L78 Accepts]: Start accepts. Automaton has 20704 states and 23546 transitions. Word has length 410 [2020-10-14 03:39:00,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:00,385 INFO L479 AbstractCegarLoop]: Abstraction has 20704 states and 23546 transitions. [2020-10-14 03:39:00,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:39:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 20704 states and 23546 transitions. [2020-10-14 03:39:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-14 03:39:00,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:00,395 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 03:39:00,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:39:00,395 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:00,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:00,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1709235391, now seen corresponding path program 1 times [2020-10-14 03:39:00,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:00,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915257685] [2020-10-14 03:39:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:00,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:00,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:05,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:05,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-14 03:39:05,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:39:05,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 03:39:05,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:05,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:39:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:39:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:05,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:05,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:05,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:05,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:05,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:05,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:39:05,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:05,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:05,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:05,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:05,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:39:05,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:05,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 03:39:05,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:05,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:39:05,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:05,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:39:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:05,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:05,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:39:05,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 03:39:05,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:05,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:39:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:06,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 03:39:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:06,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:06,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:06,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:39:06,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:06,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 03:39:06,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:06,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:06,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:06,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 03:39:06,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:06,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:06,375 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 250 proven. 96 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-14 03:39:06,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915257685] [2020-10-14 03:39:06,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:06,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:39:06,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812691414] [2020-10-14 03:39:06,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:39:06,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:06,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:39:06,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:39:06,378 INFO L87 Difference]: Start difference. First operand 20704 states and 23546 transitions. Second operand 8 states. [2020-10-14 03:39:20,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:20,971 INFO L93 Difference]: Finished difference Result 45156 states and 53474 transitions. [2020-10-14 03:39:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:39:20,973 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 463 [2020-10-14 03:39:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:21,050 INFO L225 Difference]: With dead ends: 45156 [2020-10-14 03:39:21,050 INFO L226 Difference]: Without dead ends: 24765 [2020-10-14 03:39:21,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:39:21,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24765 states. [2020-10-14 03:39:21,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24765 to 21972. [2020-10-14 03:39:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21972 states. [2020-10-14 03:39:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21972 states to 21972 states and 24873 transitions. [2020-10-14 03:39:21,539 INFO L78 Accepts]: Start accepts. Automaton has 21972 states and 24873 transitions. Word has length 463 [2020-10-14 03:39:21,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:21,540 INFO L479 AbstractCegarLoop]: Abstraction has 21972 states and 24873 transitions. [2020-10-14 03:39:21,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:39:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 21972 states and 24873 transitions. [2020-10-14 03:39:21,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-14 03:39:21,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:21,551 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:39:21,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:39:21,552 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:21,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:21,552 INFO L82 PathProgramCache]: Analyzing trace with hash -521459903, now seen corresponding path program 1 times [2020-10-14 03:39:21,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:21,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985575091] [2020-10-14 03:39:21,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:21,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:21,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:21,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:26,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:26,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 513 [2020-10-14 03:39:26,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:39:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 03:39:26,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:26,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-14 03:39:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:39:26,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:26,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:26,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:26,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:26,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:26,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:39:26,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:26,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:26,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:26,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:26,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:26,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:26,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:26,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:39:26,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:26,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 03:39:26,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:26,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-14 03:39:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:27,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:39:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:27,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:27,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:27,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:39:27,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 03:39:27,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:27,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:39:27,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:27,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-10-14 03:39:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:27,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:27,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:27,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 03:39:27,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:27,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 03:39:27,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:27,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 03:39:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:27,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 219 proven. 79 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 03:39:27,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985575091] [2020-10-14 03:39:27,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:27,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:39:27,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817622088] [2020-10-14 03:39:27,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:39:27,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:27,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:39:27,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:39:27,719 INFO L87 Difference]: Start difference. First operand 21972 states and 24873 transitions. Second operand 8 states.