/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:55:42,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:55:42,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:55:42,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:55:42,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:55:42,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:55:42,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:55:42,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:55:42,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:55:42,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:55:42,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:55:42,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:55:42,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:55:42,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:55:42,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:55:42,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:55:42,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:55:42,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:55:42,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:55:42,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:55:42,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:55:42,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:55:42,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:55:42,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:55:42,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:55:42,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:55:42,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:55:42,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:55:42,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:55:42,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:55:42,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:55:42,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:55:42,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:55:42,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:55:42,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:55:42,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:55:42,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:55:42,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:55:42,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:55:42,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:55:42,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:55:42,265 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 [2020-09-25 07:55:42,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:55:42,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:55:42,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:55:42,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:55:42,302 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:55:42,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:55:42,302 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:55:42,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:55:42,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:55:42,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:55:42,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:55:42,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:55:42,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:55:42,304 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:55:42,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:55:42,304 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:55:42,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:55:42,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:55:42,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:55:42,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:55:42,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:55:42,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:55:42,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:55:42,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:55:42,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:55:42,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:55:42,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:55:42,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:55:42,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:55:42,307 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:55:42,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:55:42,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:55:42,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:55:42,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:55:42,758 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:55:42,759 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 07:55:42,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74d2b7ea8/6fb2166f3df04e9a8ba892eee63e5ab9/FLAG50b356306 [2020-09-25 07:55:43,531 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:55:43,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 07:55:43,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74d2b7ea8/6fb2166f3df04e9a8ba892eee63e5ab9/FLAG50b356306 [2020-09-25 07:55:43,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74d2b7ea8/6fb2166f3df04e9a8ba892eee63e5ab9 [2020-09-25 07:55:43,735 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:55:43,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:55:43,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:43,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:55:43,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:55:43,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:43" (1/1) ... [2020-09-25 07:55:43,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b03ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:43, skipping insertion in model container [2020-09-25 07:55:43,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:43" (1/1) ... [2020-09-25 07:55:43,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:55:43,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:55:44,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:44,280 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:55:44,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:44,514 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:55:44,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:44 WrapperNode [2020-09-25 07:55:44,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:44,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:55:44,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:55:44,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:55:44,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:44" (1/1) ... [2020-09-25 07:55:44,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:44" (1/1) ... [2020-09-25 07:55:44,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:44" (1/1) ... [2020-09-25 07:55:44,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:44" (1/1) ... [2020-09-25 07:55:44,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:44" (1/1) ... [2020-09-25 07:55:44,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:44" (1/1) ... [2020-09-25 07:55:44,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:44" (1/1) ... [2020-09-25 07:55:44,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:55:44,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:55:44,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:55:44,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:55:44,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:44" (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 [2020-09-25 07:55:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:55:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:55:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:55:44,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:55:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:55:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:55:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:55:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:55:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:55:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:55:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:55:46,090 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:55:46,090 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:55:46,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:46 BoogieIcfgContainer [2020-09-25 07:55:46,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:55:46,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:55:46,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:55:46,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:55:46,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:55:43" (1/3) ... [2020-09-25 07:55:46,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1722a88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:46, skipping insertion in model container [2020-09-25 07:55:46,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:44" (2/3) ... [2020-09-25 07:55:46,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1722a88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:46, skipping insertion in model container [2020-09-25 07:55:46,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:46" (3/3) ... [2020-09-25 07:55:46,108 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-09-25 07:55:46,120 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:55:46,131 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:55:46,153 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:55:46,187 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:55:46,187 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:55:46,188 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:55:46,188 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:55:46,188 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:55:46,188 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:55:46,188 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:55:46,188 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:55:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:55:46,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 07:55:46,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:46,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:46,230 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:46,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:46,238 INFO L82 PathProgramCache]: Analyzing trace with hash -200720489, now seen corresponding path program 1 times [2020-09-25 07:55:46,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:46,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190203603] [2020-09-25 07:55:46,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:46,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:47,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:47,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 07:55:47,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:55:47,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-09-25 07:55:47,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:47,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:47,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:47,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:55:47,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 07:55:47,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:55:47,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:47,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:47,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:47,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:47,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:55:47,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:47,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:55:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:47,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190203603] [2020-09-25 07:55:47,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:47,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:55:47,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755283231] [2020-09-25 07:55:47,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:47,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:47,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:47,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:47,587 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 07:55:50,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:50,373 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 07:55:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:55:50,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-25 07:55:50,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:50,406 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 07:55:50,406 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 07:55:50,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 07:55:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 07:55:50,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 07:55:50,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 07:55:50,547 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 43 [2020-09-25 07:55:50,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:50,548 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 07:55:50,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 07:55:50,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 07:55:50,557 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:50,558 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:50,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:55:50,558 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:50,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:50,559 INFO L82 PathProgramCache]: Analyzing trace with hash -819138438, now seen corresponding path program 1 times [2020-09-25 07:55:50,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:50,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483611173] [2020-09-25 07:55:50,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:50,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:50,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:51,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:51,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:51,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:53,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 07:55:53,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:55:53,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2767 [2020-09-25 07:55:53,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:53,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:55:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:55:53,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:53,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:53,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:53,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:55:53,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:53,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:55:53,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:53,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:55:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:53,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:55:53,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:53,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 07:55:53,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:53,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:53,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:55:53,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:53,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483611173] [2020-09-25 07:55:53,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:53,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:55:53,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762477258] [2020-09-25 07:55:53,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:53,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:53,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:53,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:53,745 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 7 states. [2020-09-25 07:55:56,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:56,015 INFO L93 Difference]: Finished difference Result 1802 states and 2314 transitions. [2020-09-25 07:55:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:55:56,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-09-25 07:55:56,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:56,025 INFO L225 Difference]: With dead ends: 1802 [2020-09-25 07:55:56,026 INFO L226 Difference]: Without dead ends: 1090 [2020-09-25 07:55:56,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:56,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2020-09-25 07:55:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1042. [2020-09-25 07:55:56,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-09-25 07:55:56,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1242 transitions. [2020-09-25 07:55:56,081 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1242 transitions. Word has length 126 [2020-09-25 07:55:56,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:56,081 INFO L479 AbstractCegarLoop]: Abstraction has 1042 states and 1242 transitions. [2020-09-25 07:55:56,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:56,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1242 transitions. [2020-09-25 07:55:56,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 07:55:56,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:56,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:56,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:55:56,086 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:56,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:56,087 INFO L82 PathProgramCache]: Analyzing trace with hash -203251606, now seen corresponding path program 1 times [2020-09-25 07:55:56,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:56,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973108809] [2020-09-25 07:55:56,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:56,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:56,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:58,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:58,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 07:55:58,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:55:58,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2403 [2020-09-25 07:55:58,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:58,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:58,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:55:58,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:55:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:55:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:58,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:58,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:58,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:58,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:58,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:58,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:55:58,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:58,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:58,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:58,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:55:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:58,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:58,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:55:58,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:58,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 07:55:58,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:58,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:55:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:55:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:59,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973108809] [2020-09-25 07:55:59,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:59,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:55:59,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623674384] [2020-09-25 07:55:59,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:55:59,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:59,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:55:59,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:59,012 INFO L87 Difference]: Start difference. First operand 1042 states and 1242 transitions. Second operand 8 states. [2020-09-25 07:56:02,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:02,407 INFO L93 Difference]: Finished difference Result 3150 states and 4007 transitions. [2020-09-25 07:56:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:56:02,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 132 [2020-09-25 07:56:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:02,420 INFO L225 Difference]: With dead ends: 3150 [2020-09-25 07:56:02,421 INFO L226 Difference]: Without dead ends: 2240 [2020-09-25 07:56:02,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:56:02,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2020-09-25 07:56:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2196. [2020-09-25 07:56:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2196 states. [2020-09-25 07:56:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2707 transitions. [2020-09-25 07:56:02,490 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2707 transitions. Word has length 132 [2020-09-25 07:56:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:02,491 INFO L479 AbstractCegarLoop]: Abstraction has 2196 states and 2707 transitions. [2020-09-25 07:56:02,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:56:02,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2707 transitions. [2020-09-25 07:56:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 07:56:02,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:02,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:02,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:56:02,495 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:02,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:02,496 INFO L82 PathProgramCache]: Analyzing trace with hash -682799120, now seen corresponding path program 1 times [2020-09-25 07:56:02,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:02,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655336034] [2020-09-25 07:56:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:02,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:03,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 07:56:03,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:56:03,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1383 [2020-09-25 07:56:03,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:03,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:56:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:56:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:03,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:03,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:03,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:03,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:03,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:56:03,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:03,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:56:03,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:04,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:04,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:04,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 07:56:04,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:04,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 07:56:04,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:04,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:04,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 07:56:04,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:04,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655336034] [2020-09-25 07:56:04,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:04,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:04,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723671513] [2020-09-25 07:56:04,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:04,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:04,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:04,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:04,332 INFO L87 Difference]: Start difference. First operand 2196 states and 2707 transitions. Second operand 7 states. [2020-09-25 07:56:06,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:06,249 INFO L93 Difference]: Finished difference Result 5917 states and 8497 transitions. [2020-09-25 07:56:06,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:56:06,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-25 07:56:06,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:06,284 INFO L225 Difference]: With dead ends: 5917 [2020-09-25 07:56:06,285 INFO L226 Difference]: Without dead ends: 3886 [2020-09-25 07:56:06,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:56:06,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2020-09-25 07:56:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3452. [2020-09-25 07:56:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3452 states. [2020-09-25 07:56:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 4343 transitions. [2020-09-25 07:56:06,486 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 4343 transitions. Word has length 148 [2020-09-25 07:56:06,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:06,488 INFO L479 AbstractCegarLoop]: Abstraction has 3452 states and 4343 transitions. [2020-09-25 07:56:06,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 4343 transitions. [2020-09-25 07:56:06,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 07:56:06,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:06,494 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:06,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:56:06,494 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:06,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:06,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1819236263, now seen corresponding path program 1 times [2020-09-25 07:56:06,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:06,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333080342] [2020-09-25 07:56:06,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:06,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:06,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:06,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:07,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:07,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:09,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:11,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 07:56:11,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:56:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 07:56:11,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:11,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:11,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:11,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:56:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 07:56:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:11,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:11,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:11,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:11,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:11,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:56:11,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:11,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:11,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:11,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:11,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:11,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:56:11,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 07:56:11,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:11,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:11,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:11,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:11,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:56:11,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:11,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:56:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:11,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:12,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:12,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 07:56:12,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:12,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 07:56:12,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:12,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:12,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:12,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:12,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 07:56:12,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:12,222 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:12,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333080342] [2020-09-25 07:56:12,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:12,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:56:12,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870371317] [2020-09-25 07:56:12,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:56:12,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:12,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:56:12,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:12,226 INFO L87 Difference]: Start difference. First operand 3452 states and 4343 transitions. Second operand 8 states. [2020-09-25 07:56:15,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:15,704 INFO L93 Difference]: Finished difference Result 8541 states and 11235 transitions. [2020-09-25 07:56:15,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:56:15,705 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-09-25 07:56:15,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:15,730 INFO L225 Difference]: With dead ends: 8541 [2020-09-25 07:56:15,730 INFO L226 Difference]: Without dead ends: 5254 [2020-09-25 07:56:15,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:56:15,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5254 states. [2020-09-25 07:56:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5254 to 5035. [2020-09-25 07:56:15,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5035 states. [2020-09-25 07:56:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 6508 transitions. [2020-09-25 07:56:15,915 INFO L78 Accepts]: Start accepts. Automaton has 5035 states and 6508 transitions. Word has length 230 [2020-09-25 07:56:15,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:15,916 INFO L479 AbstractCegarLoop]: Abstraction has 5035 states and 6508 transitions. [2020-09-25 07:56:15,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:56:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5035 states and 6508 transitions. [2020-09-25 07:56:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 07:56:15,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:15,921 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:15,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:15,922 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:15,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:15,922 INFO L82 PathProgramCache]: Analyzing trace with hash -12142129, now seen corresponding path program 1 times [2020-09-25 07:56:15,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:15,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128453382] [2020-09-25 07:56:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:16,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:16,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 07:56:16,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:16,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-09-25 07:56:16,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:16,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 223 [2020-09-25 07:56:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:56:16,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:16,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:16,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:16,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:16,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:16,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:56:16,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:16,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:16,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:16,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:16,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:16,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 07:56:16,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:16,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:56:16,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:16,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:16,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 07:56:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:16,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:16,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:16,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 07:56:16,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 07:56:16,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:16,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 07:56:16,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 07:56:16,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128453382] [2020-09-25 07:56:16,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:16,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:56:16,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727378617] [2020-09-25 07:56:16,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:56:16,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:16,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:56:16,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:16,855 INFO L87 Difference]: Start difference. First operand 5035 states and 6508 transitions. Second operand 5 states. [2020-09-25 07:56:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:18,729 INFO L93 Difference]: Finished difference Result 11263 states and 14862 transitions. [2020-09-25 07:56:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:56:18,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-09-25 07:56:18,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:18,758 INFO L225 Difference]: With dead ends: 11263 [2020-09-25 07:56:18,759 INFO L226 Difference]: Without dead ends: 6393 [2020-09-25 07:56:18,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:18,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2020-09-25 07:56:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 5633. [2020-09-25 07:56:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5633 states. [2020-09-25 07:56:18,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5633 states to 5633 states and 7207 transitions. [2020-09-25 07:56:18,919 INFO L78 Accepts]: Start accepts. Automaton has 5633 states and 7207 transitions. Word has length 247 [2020-09-25 07:56:18,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:18,920 INFO L479 AbstractCegarLoop]: Abstraction has 5633 states and 7207 transitions. [2020-09-25 07:56:18,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:56:18,920 INFO L276 IsEmpty]: Start isEmpty. Operand 5633 states and 7207 transitions. [2020-09-25 07:56:18,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-09-25 07:56:18,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:18,935 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:18,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:56:18,936 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:18,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:18,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1318696398, now seen corresponding path program 1 times [2020-09-25 07:56:18,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:18,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802205381] [2020-09-25 07:56:18,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:19,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:24,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:24,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-09-25 07:56:24,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:56:24,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-09-25 07:56:24,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:24,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:24,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 293 [2020-09-25 07:56:24,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 07:56:24,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:24,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:24,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:24,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:24,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:24,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:24,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:56:24,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:24,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:24,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:24,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:24,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:24,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:24,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:24,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:24,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:24,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 07:56:24,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 07:56:24,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:24,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:24,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:24,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:24,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:24,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:24,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 07:56:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:24,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:24,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:24,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 07:56:24,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:24,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 07:56:24,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:24,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 07:56:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-09-25 07:56:24,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802205381] [2020-09-25 07:56:24,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:24,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:56:24,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243840655] [2020-09-25 07:56:24,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:56:24,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:24,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:56:24,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:24,717 INFO L87 Difference]: Start difference. First operand 5633 states and 7207 transitions. Second operand 5 states. [2020-09-25 07:56:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:26,795 INFO L93 Difference]: Finished difference Result 12935 states and 17030 transitions. [2020-09-25 07:56:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:56:26,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-09-25 07:56:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:26,826 INFO L225 Difference]: With dead ends: 12935 [2020-09-25 07:56:26,826 INFO L226 Difference]: Without dead ends: 7467 [2020-09-25 07:56:26,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:26,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7467 states. [2020-09-25 07:56:26,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7467 to 6691. [2020-09-25 07:56:26,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6691 states. [2020-09-25 07:56:27,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6691 states to 6691 states and 8426 transitions. [2020-09-25 07:56:27,007 INFO L78 Accepts]: Start accepts. Automaton has 6691 states and 8426 transitions. Word has length 318 [2020-09-25 07:56:27,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:27,007 INFO L479 AbstractCegarLoop]: Abstraction has 6691 states and 8426 transitions. [2020-09-25 07:56:27,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:56:27,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6691 states and 8426 transitions. [2020-09-25 07:56:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-09-25 07:56:27,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:27,025 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:56:27,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:56:27,025 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:27,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1249027994, now seen corresponding path program 1 times [2020-09-25 07:56:27,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:27,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935417028] [2020-09-25 07:56:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:27,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:27,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking...