/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:23:05,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:23:05,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:23:05,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:23:05,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:23:05,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:23:05,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:23:05,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:23:05,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:23:05,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:23:05,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:23:05,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:23:05,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:23:05,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:23:05,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:23:05,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:23:05,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:23:05,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:23:05,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:23:05,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:23:05,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:23:05,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:23:05,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:23:05,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:23:05,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:23:05,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:23:05,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:23:05,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:23:05,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:23:05,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:23:05,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:23:05,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:23:05,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:23:05,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:23:05,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:23:05,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:23:05,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:23:05,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:23:05,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:23:05,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:23:05,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:23:05,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:23:05,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:23:05,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:23:05,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:23:05,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:23:05,384 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:23:05,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:23:05,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:23:05,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:23:05,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:23:05,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:23:05,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:23:05,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:23:05,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:23:05,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:23:05,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:23:05,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:23:05,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:23:05,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:23:05,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:23:05,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:23:05,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:23:05,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:23:05,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:23:05,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:23:05,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:23:05,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:23:05,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:23:05,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:23:05,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:23:05,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:23:05,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:23:05,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:23:05,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:23:05,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:23:05,766 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:23:05,767 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label40.c [2020-10-13 08:23:05,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd2bdd9df/b4e1abc7a09f4e6ebfbb8e45ee8ce4d3/FLAGb7ad5337a [2020-10-13 08:23:06,717 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:23:06,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label40.c [2020-10-13 08:23:06,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd2bdd9df/b4e1abc7a09f4e6ebfbb8e45ee8ce4d3/FLAGb7ad5337a [2020-10-13 08:23:07,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd2bdd9df/b4e1abc7a09f4e6ebfbb8e45ee8ce4d3 [2020-10-13 08:23:07,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:23:07,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:23:07,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:23:07,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:23:07,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:23:07,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:23:07" (1/1) ... [2020-10-13 08:23:07,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5035f6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:07, skipping insertion in model container [2020-10-13 08:23:07,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:23:07" (1/1) ... [2020-10-13 08:23:07,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:23:07,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:23:08,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:23:08,811 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:23:09,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:23:09,551 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:23:09,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:09 WrapperNode [2020-10-13 08:23:09,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:23:09,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:23:09,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:23:09,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:23:09,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:09" (1/1) ... [2020-10-13 08:23:09,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:09" (1/1) ... [2020-10-13 08:23:09,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:09" (1/1) ... [2020-10-13 08:23:09,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:09" (1/1) ... [2020-10-13 08:23:09,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:09" (1/1) ... [2020-10-13 08:23:09,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:09" (1/1) ... [2020-10-13 08:23:09,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:09" (1/1) ... [2020-10-13 08:23:09,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:23:09,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:23:09,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:23:09,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:23:09,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:23:09,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:23:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:23:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:23:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:23:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:23:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:23:09,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:23:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:23:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:23:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:23:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:23:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:23:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:23:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:23:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:23:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:23:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:23:15,953 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:23:15,954 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:23:15,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:23:15 BoogieIcfgContainer [2020-10-13 08:23:15,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:23:15,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:23:15,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:23:15,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:23:15,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:23:07" (1/3) ... [2020-10-13 08:23:15,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458b0f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:23:15, skipping insertion in model container [2020-10-13 08:23:15,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:09" (2/3) ... [2020-10-13 08:23:15,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458b0f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:23:15, skipping insertion in model container [2020-10-13 08:23:15,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:23:15" (3/3) ... [2020-10-13 08:23:15,979 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label40.c [2020-10-13 08:23:15,991 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:23:16,000 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:23:16,016 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:23:16,045 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:23:16,046 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:23:16,046 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:23:16,046 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:23:16,046 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:23:16,046 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:23:16,046 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:23:16,047 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:23:16,081 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:23:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 08:23:16,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:16,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:23:16,090 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:16,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:16,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1787696750, now seen corresponding path program 1 times [2020-10-13 08:23:16,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:16,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999259110] [2020-10-13 08:23:16,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:16,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:16,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:16,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 08:23:16,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:16,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-13 08:23:16,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:23:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:23:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 08:23:16,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:23:16,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:16,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:16,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:16,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:16,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:23:16,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:16,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:23:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:23:16,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999259110] [2020-10-13 08:23:16,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:23:16,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:23:16,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105357973] [2020-10-13 08:23:16,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:23:16,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:16,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:23:16,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:23:16,768 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:23:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:28,544 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:23:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:28,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-13 08:23:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:28,576 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:23:28,577 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:23:28,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:23:28,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:23:28,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:23:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:23:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-13 08:23:28,747 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 15 [2020-10-13 08:23:28,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:28,747 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-13 08:23:28,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:23:28,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-13 08:23:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 08:23:28,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:28,756 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:23:28,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:23:28,757 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:28,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:28,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1418122443, now seen corresponding path program 1 times [2020-10-13 08:23:28,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:28,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750398110] [2020-10-13 08:23:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:28,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:29,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:29,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 08:23:29,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:23:29,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-10-13 08:23:29,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:29,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:29,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:23:29,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:23:29,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:29,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:29,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:29,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:29,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:29,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:23:29,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:29,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:29,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:29,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:29,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:29,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:23:29,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 08:23:29,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:23:29,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 08:23:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:23:30,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750398110] [2020-10-13 08:23:30,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:30,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:23:30,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910663781] [2020-10-13 08:23:30,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:23:30,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:30,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:23:30,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:23:30,024 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-13 08:23:40,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:40,389 INFO L93 Difference]: Finished difference Result 4680 states and 7660 transitions. [2020-10-13 08:23:40,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:40,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 08:23:40,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:40,409 INFO L225 Difference]: With dead ends: 4680 [2020-10-13 08:23:40,409 INFO L226 Difference]: Without dead ends: 3133 [2020-10-13 08:23:40,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:23:40,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2020-10-13 08:23:40,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 3119. [2020-10-13 08:23:40,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3119 states. [2020-10-13 08:23:40,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4785 transitions. [2020-10-13 08:23:40,505 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4785 transitions. Word has length 90 [2020-10-13 08:23:40,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:40,506 INFO L479 AbstractCegarLoop]: Abstraction has 3119 states and 4785 transitions. [2020-10-13 08:23:40,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:23:40,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4785 transitions. [2020-10-13 08:23:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 08:23:40,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:40,509 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:23:40,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:23:40,509 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:40,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:40,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1679839178, now seen corresponding path program 1 times [2020-10-13 08:23:40,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:40,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136661304] [2020-10-13 08:23:40,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:40,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:40,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:41,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:41,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:41,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:23:41,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:23:41,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-10-13 08:23:41,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 08:23:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:23:41,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:41,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:41,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:41,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:41,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:41,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:23:41,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:41,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:23:41,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:41,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:41,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:41,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:23:41,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:41,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 08:23:41,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:23:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:23:41,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136661304] [2020-10-13 08:23:41,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:41,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:23:41,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248309383] [2020-10-13 08:23:41,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:23:41,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:41,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:23:41,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:23:41,566 INFO L87 Difference]: Start difference. First operand 3119 states and 4785 transitions. Second operand 6 states. [2020-10-13 08:23:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:51,891 INFO L93 Difference]: Finished difference Result 7807 states and 12439 transitions. [2020-10-13 08:23:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:51,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-13 08:23:51,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:51,953 INFO L225 Difference]: With dead ends: 7807 [2020-10-13 08:23:51,953 INFO L226 Difference]: Without dead ends: 4694 [2020-10-13 08:23:51,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:23:51,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2020-10-13 08:23:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4680. [2020-10-13 08:23:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4680 states. [2020-10-13 08:23:52,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4680 states to 4680 states and 7220 transitions. [2020-10-13 08:23:52,106 INFO L78 Accepts]: Start accepts. Automaton has 4680 states and 7220 transitions. Word has length 93 [2020-10-13 08:23:52,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:52,107 INFO L479 AbstractCegarLoop]: Abstraction has 4680 states and 7220 transitions. [2020-10-13 08:23:52,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:23:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4680 states and 7220 transitions. [2020-10-13 08:23:52,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 08:23:52,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:52,119 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:23:52,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:23:52,119 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:52,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:52,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1549682797, now seen corresponding path program 1 times [2020-10-13 08:23:52,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:52,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805438781] [2020-10-13 08:23:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:52,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:52,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:52,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:52,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:23:52,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:23:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 741 [2020-10-13 08:23:52,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:52,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:52,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 08:23:52,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:23:52,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:52,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:52,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:52,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:52,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:52,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:52,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:23:52,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:52,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:52,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:53,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:53,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:53,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:23:53,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:23:53,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:23:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:23:53,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805438781] [2020-10-13 08:23:53,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:53,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:23:53,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052363538] [2020-10-13 08:23:53,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:23:53,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:53,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:23:53,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:23:53,132 INFO L87 Difference]: Start difference. First operand 4680 states and 7220 transitions. Second operand 5 states. [2020-10-13 08:24:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:05,989 INFO L93 Difference]: Finished difference Result 14033 states and 22111 transitions. [2020-10-13 08:24:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:05,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 08:24:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:06,038 INFO L225 Difference]: With dead ends: 14033 [2020-10-13 08:24:06,038 INFO L226 Difference]: Without dead ends: 9359 [2020-10-13 08:24:06,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:24:06,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9359 states. [2020-10-13 08:24:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9359 to 9347. [2020-10-13 08:24:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9347 states. [2020-10-13 08:24:06,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9347 states to 9347 states and 13392 transitions. [2020-10-13 08:24:06,339 INFO L78 Accepts]: Start accepts. Automaton has 9347 states and 13392 transitions. Word has length 94 [2020-10-13 08:24:06,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:06,341 INFO L479 AbstractCegarLoop]: Abstraction has 9347 states and 13392 transitions. [2020-10-13 08:24:06,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:06,342 INFO L276 IsEmpty]: Start isEmpty. Operand 9347 states and 13392 transitions. [2020-10-13 08:24:06,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 08:24:06,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:06,344 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:24:06,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:24:06,345 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:06,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:06,345 INFO L82 PathProgramCache]: Analyzing trace with hash -68879710, now seen corresponding path program 1 times [2020-10-13 08:24:06,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:06,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069203027] [2020-10-13 08:24:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:06,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:06,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:07,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:07,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:24:07,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:24:07,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-10-13 08:24:07,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:07,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:07,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:24:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:24:07,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:07,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:07,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:07,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:07,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:07,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:07,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:24:07,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:07,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:07,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:07,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:07,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:07,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:07,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:07,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:24:07,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:07,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:24:07,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:07,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:07,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:07,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 08:24:07,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:07,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069203027] [2020-10-13 08:24:07,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:07,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:07,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229130099] [2020-10-13 08:24:07,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:07,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:07,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:07,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:07,636 INFO L87 Difference]: Start difference. First operand 9347 states and 13392 transitions. Second operand 5 states. [2020-10-13 08:24:20,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:20,582 INFO L93 Difference]: Finished difference Result 27996 states and 40999 transitions. [2020-10-13 08:24:20,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:20,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 08:24:20,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:20,665 INFO L225 Difference]: With dead ends: 27996 [2020-10-13 08:24:20,665 INFO L226 Difference]: Without dead ends: 18655 [2020-10-13 08:24:20,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:24:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18655 states. [2020-10-13 08:24:21,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18655 to 18643. [2020-10-13 08:24:21,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18643 states. [2020-10-13 08:24:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18643 states to 18643 states and 24581 transitions. [2020-10-13 08:24:21,138 INFO L78 Accepts]: Start accepts. Automaton has 18643 states and 24581 transitions. Word has length 105 [2020-10-13 08:24:21,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:21,139 INFO L479 AbstractCegarLoop]: Abstraction has 18643 states and 24581 transitions. [2020-10-13 08:24:21,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:21,139 INFO L276 IsEmpty]: Start isEmpty. Operand 18643 states and 24581 transitions. [2020-10-13 08:24:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 08:24:21,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:21,145 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:24:21,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:24:21,145 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:21,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:21,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1724868409, now seen corresponding path program 1 times [2020-10-13 08:24:21,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:21,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512888115] [2020-10-13 08:24:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:21,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:22,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:22,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:24:22,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:24:22,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-13 08:24:22,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:22,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:22,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-13 08:24:22,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:24:22,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:22,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:22,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:22,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:22,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:22,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:22,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:24:22,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:22,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:22,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:22,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:22,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:22,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:22,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:22,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:24:22,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:22,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 08:24:22,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:22,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 08:24:22,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:22,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512888115] [2020-10-13 08:24:22,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:22,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:22,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843171098] [2020-10-13 08:24:22,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:22,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:22,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:22,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:22,347 INFO L87 Difference]: Start difference. First operand 18643 states and 24581 transitions. Second operand 5 states. [2020-10-13 08:24:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:36,180 INFO L93 Difference]: Finished difference Result 43490 states and 59558 transitions. [2020-10-13 08:24:36,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:36,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-13 08:24:36,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:36,272 INFO L225 Difference]: With dead ends: 43490 [2020-10-13 08:24:36,272 INFO L226 Difference]: Without dead ends: 24853 [2020-10-13 08:24:36,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:24:36,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24853 states. [2020-10-13 08:24:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24853 to 24837. [2020-10-13 08:24:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24837 states. [2020-10-13 08:24:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24837 states to 24837 states and 31776 transitions. [2020-10-13 08:24:36,791 INFO L78 Accepts]: Start accepts. Automaton has 24837 states and 31776 transitions. Word has length 136 [2020-10-13 08:24:36,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:36,792 INFO L479 AbstractCegarLoop]: Abstraction has 24837 states and 31776 transitions. [2020-10-13 08:24:36,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:36,792 INFO L276 IsEmpty]: Start isEmpty. Operand 24837 states and 31776 transitions. [2020-10-13 08:24:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-13 08:24:36,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:36,799 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:24:36,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:24:36,799 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:36,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:36,800 INFO L82 PathProgramCache]: Analyzing trace with hash 977515135, now seen corresponding path program 1 times [2020-10-13 08:24:36,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:36,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004793855] [2020-10-13 08:24:36,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:36,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:37,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:38,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:38,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-13 08:24:38,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:24:38,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2067 [2020-10-13 08:24:38,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 08:24:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:24:38,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:38,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:38,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:38,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:38,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:38,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:38,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:24:38,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:39,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:39,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:39,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:39,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 08:24:39,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:39,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-13 08:24:39,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:39,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:39,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 08:24:39,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:39,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004793855] [2020-10-13 08:24:39,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:39,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:39,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708869972] [2020-10-13 08:24:39,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:39,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:39,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:39,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:39,297 INFO L87 Difference]: Start difference. First operand 24837 states and 31776 transitions. Second operand 5 states. [2020-10-13 08:24:54,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:54,202 INFO L93 Difference]: Finished difference Result 54337 states and 71800 transitions. [2020-10-13 08:24:54,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:54,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-13 08:24:54,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:54,290 INFO L225 Difference]: With dead ends: 54337 [2020-10-13 08:24:54,291 INFO L226 Difference]: Without dead ends: 29506 [2020-10-13 08:24:54,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:24:54,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29506 states. [2020-10-13 08:24:54,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29506 to 29490. [2020-10-13 08:24:54,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29490 states. [2020-10-13 08:24:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29490 states to 29490 states and 37304 transitions. [2020-10-13 08:24:54,858 INFO L78 Accepts]: Start accepts. Automaton has 29490 states and 37304 transitions. Word has length 196 [2020-10-13 08:24:54,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:54,859 INFO L479 AbstractCegarLoop]: Abstraction has 29490 states and 37304 transitions. [2020-10-13 08:24:54,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:54,859 INFO L276 IsEmpty]: Start isEmpty. Operand 29490 states and 37304 transitions. [2020-10-13 08:24:54,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 08:24:54,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:54,869 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:24:54,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:24:54,870 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:54,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:54,870 INFO L82 PathProgramCache]: Analyzing trace with hash -605513762, now seen corresponding path program 1 times [2020-10-13 08:24:54,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:54,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097726466] [2020-10-13 08:24:54,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:54,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:55,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:55,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:57,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:57,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:57,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 08:24:57,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:24:57,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2389 [2020-10-13 08:24:57,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:24:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:24:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 08:24:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:57,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:57,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:57,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:57,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:57,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:24:57,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:24:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:57,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:57,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:57,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:57,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:24:57,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:57,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 08:24:57,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:24:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 08:24:57,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:57,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 08:24:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:57,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:57,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:57,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:24:57,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:57,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:24:57,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:57,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 08:24:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:57,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 16 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:24:57,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097726466] [2020-10-13 08:24:57,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:57,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:24:57,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649923544] [2020-10-13 08:24:57,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:24:57,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:57,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:24:57,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:24:57,809 INFO L87 Difference]: Start difference. First operand 29490 states and 37304 transitions. Second operand 7 states. [2020-10-13 08:25:14,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:14,973 INFO L93 Difference]: Finished difference Result 76262 states and 97699 transitions. [2020-10-13 08:25:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:25:14,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2020-10-13 08:25:14,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:15,103 INFO L225 Difference]: With dead ends: 76262 [2020-10-13 08:25:15,103 INFO L226 Difference]: Without dead ends: 46778 [2020-10-13 08:25:15,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:25:15,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46778 states. [2020-10-13 08:25:15,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46778 to 46764. [2020-10-13 08:25:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46764 states. [2020-10-13 08:25:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46764 states to 46764 states and 58316 transitions. [2020-10-13 08:25:15,800 INFO L78 Accepts]: Start accepts. Automaton has 46764 states and 58316 transitions. Word has length 223 [2020-10-13 08:25:15,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:15,801 INFO L479 AbstractCegarLoop]: Abstraction has 46764 states and 58316 transitions. [2020-10-13 08:25:15,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:25:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 46764 states and 58316 transitions. [2020-10-13 08:25:15,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-13 08:25:15,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:15,812 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:25:15,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:25:15,813 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:15,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1635838310, now seen corresponding path program 1 times [2020-10-13 08:25:15,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:15,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561946768] [2020-10-13 08:25:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:15,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:16,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:16,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:18,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:18,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-13 08:25:18,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:25:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2432 [2020-10-13 08:25:18,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:25:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:25:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 08:25:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:18,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:18,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:18,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:18,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:25:18,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:25:18,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:18,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:18,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:18,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:18,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:25:18,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:18,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-13 08:25:18,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:18,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:18,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:25:18,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 08:25:18,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 08:25:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:18,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:18,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:18,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:25:18,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:18,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:25:18,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 08:25:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 16 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:25:19,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561946768] [2020-10-13 08:25:19,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:19,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:25:19,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614954161] [2020-10-13 08:25:19,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:25:19,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:19,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:25:19,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:25:19,202 INFO L87 Difference]: Start difference. First operand 46764 states and 58316 transitions. Second operand 7 states. [2020-10-13 08:25:36,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:36,954 INFO L93 Difference]: Finished difference Result 104128 states and 134521 transitions. [2020-10-13 08:25:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:25:36,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-13 08:25:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:37,129 INFO L225 Difference]: With dead ends: 104128 [2020-10-13 08:25:37,129 INFO L226 Difference]: Without dead ends: 57370 [2020-10-13 08:25:37,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:25:37,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57370 states. [2020-10-13 08:25:38,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57370 to 56589. [2020-10-13 08:25:38,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56589 states. [2020-10-13 08:25:38,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56589 states to 56589 states and 70495 transitions. [2020-10-13 08:25:38,220 INFO L78 Accepts]: Start accepts. Automaton has 56589 states and 70495 transitions. Word has length 251 [2020-10-13 08:25:38,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:38,221 INFO L479 AbstractCegarLoop]: Abstraction has 56589 states and 70495 transitions. [2020-10-13 08:25:38,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:25:38,221 INFO L276 IsEmpty]: Start isEmpty. Operand 56589 states and 70495 transitions. [2020-10-13 08:25:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-13 08:25:38,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:38,239 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:25:38,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:25:38,239 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:38,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:38,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1002550767, now seen corresponding path program 1 times [2020-10-13 08:25:38,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:38,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457128384] [2020-10-13 08:25:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:38,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:39,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:43,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:43,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-13 08:25:43,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:25:43,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4966 [2020-10-13 08:25:43,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:43,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:43,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:25:43,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:25:43,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:43,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:43,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:43,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:43,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:25:43,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:43,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:43,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:43,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:43,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:25:43,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:43,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:25:43,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:43,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:25:43,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:43,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:25:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:43,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:43,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:43,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:25:43,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:25:43,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-13 08:25:43,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:43,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:43,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:25:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:25:43,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:43,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:25:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:44,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:44,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:25:44,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:44,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:25:44,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:44,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 08:25:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:44,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 98 proven. 72 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 08:25:44,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457128384] [2020-10-13 08:25:44,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:44,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:25:44,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215928488] [2020-10-13 08:25:44,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:25:44,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:44,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:25:44,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:25:44,269 INFO L87 Difference]: Start difference. First operand 56589 states and 70495 transitions. Second operand 7 states. [2020-10-13 08:26:02,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:02,350 INFO L93 Difference]: Finished difference Result 113516 states and 142246 transitions. [2020-10-13 08:26:02,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:26:02,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-10-13 08:26:02,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:02,525 INFO L225 Difference]: With dead ends: 113516 [2020-10-13 08:26:02,525 INFO L226 Difference]: Without dead ends: 56763 [2020-10-13 08:26:02,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:26:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56763 states. [2020-10-13 08:26:03,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56763 to 56739. [2020-10-13 08:26:03,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56739 states. [2020-10-13 08:26:03,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56739 states to 56739 states and 69236 transitions. [2020-10-13 08:26:03,478 INFO L78 Accepts]: Start accepts. Automaton has 56739 states and 69236 transitions. Word has length 286 [2020-10-13 08:26:03,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:03,479 INFO L479 AbstractCegarLoop]: Abstraction has 56739 states and 69236 transitions. [2020-10-13 08:26:03,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:26:03,479 INFO L276 IsEmpty]: Start isEmpty. Operand 56739 states and 69236 transitions. [2020-10-13 08:26:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-13 08:26:03,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:03,494 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:26:03,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:26:03,494 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:03,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:03,495 INFO L82 PathProgramCache]: Analyzing trace with hash 992443371, now seen corresponding path program 1 times [2020-10-13 08:26:03,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:03,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427776487] [2020-10-13 08:26:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:03,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:04,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:07,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:07,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-13 08:26:07,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:26:07,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3565 [2020-10-13 08:26:07,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-13 08:26:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 08:26:07,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:07,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:07,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:07,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:07,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:07,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:07,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:26:07,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:07,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:07,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:07,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:07,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:07,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:07,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:07,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:07,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:26:07,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:07,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:26:07,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:07,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:07,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:07,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:07,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:07,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 08:26:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:07,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:07,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:07,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:26:07,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:07,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:26:07,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:07,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:07,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:26:07,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:07,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-13 08:26:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:07,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:07,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:26:07,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:07,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-13 08:26:07,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:07,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:07,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:26:07,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 08:26:07,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 08:26:08,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427776487] [2020-10-13 08:26:08,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:08,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:26:08,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119143826] [2020-10-13 08:26:08,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:26:08,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:08,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:26:08,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:26:08,145 INFO L87 Difference]: Start difference. First operand 56739 states and 69236 transitions. Second operand 8 states. [2020-10-13 08:26:41,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:41,414 INFO L93 Difference]: Finished difference Result 123031 states and 152352 transitions. [2020-10-13 08:26:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 08:26:41,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 332 [2020-10-13 08:26:41,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:41,546 INFO L225 Difference]: With dead ends: 123031 [2020-10-13 08:26:41,546 INFO L226 Difference]: Without dead ends: 63943 [2020-10-13 08:26:41,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 08:26:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63943 states. [2020-10-13 08:26:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63943 to 60040. [2020-10-13 08:26:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60040 states. [2020-10-13 08:26:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60040 states to 60040 states and 69652 transitions. [2020-10-13 08:26:42,394 INFO L78 Accepts]: Start accepts. Automaton has 60040 states and 69652 transitions. Word has length 332 [2020-10-13 08:26:42,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:42,394 INFO L479 AbstractCegarLoop]: Abstraction has 60040 states and 69652 transitions. [2020-10-13 08:26:42,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:26:42,394 INFO L276 IsEmpty]: Start isEmpty. Operand 60040 states and 69652 transitions. [2020-10-13 08:26:42,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-13 08:26:42,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:42,416 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:26:42,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:26:42,416 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:42,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:42,417 INFO L82 PathProgramCache]: Analyzing trace with hash 455706838, now seen corresponding path program 1 times [2020-10-13 08:26:42,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:42,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806988738] [2020-10-13 08:26:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:42,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:42,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:46,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:46,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-13 08:26:46,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:26:46,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4460 [2020-10-13 08:26:46,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:46,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:26:46,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:26:46,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:26:46,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:47,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:47,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:47,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:47,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:47,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:47,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:26:47,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:26:47,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:47,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:47,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:47,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:47,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 08:26:47,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 08:26:47,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:26:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:26:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:47,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 08:26:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:47,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:47,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:47,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:26:47,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:47,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 08:26:47,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-13 08:26:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:47,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:47,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-13 08:26:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:47,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:47,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:26:47,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:47,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:26:47,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:47,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 08:26:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:47,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 24 proven. 156 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-10-13 08:26:47,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806988738] [2020-10-13 08:26:47,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:47,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:26:47,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884806787] [2020-10-13 08:26:47,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:26:47,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:47,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:26:47,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:26:47,805 INFO L87 Difference]: Start difference. First operand 60040 states and 69652 transitions. Second operand 7 states.