/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=0.6 --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_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:46:33,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:46:33,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:46:33,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:46:33,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:46:33,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:46:33,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:46:33,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:46:33,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:46:33,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:46:33,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:46:33,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:46:33,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:46:33,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:46:33,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:46:33,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:46:33,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:46:33,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:46:33,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:46:33,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:46:33,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:46:33,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:46:33,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:46:33,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:46:33,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:46:33,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:46:33,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:46:33,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:46:33,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:46:33,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:46:33,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:46:33,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:46:33,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:46:33,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:46:33,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:46:33,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:46:33,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:46:33,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:46:33,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:46:33,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:46:33,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:46:33,218 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 06:46:33,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:46:33,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:46:33,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:46:33,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:46:33,271 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:46:33,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:46:33,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:46:33,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:46:33,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:46:33,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:46:33,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:46:33,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:46:33,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:46:33,275 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:46:33,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:46:33,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:46:33,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:46:33,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:46:33,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:46:33,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:46:33,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:46:33,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:33,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:46:33,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:46:33,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:46:33,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:46:33,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:46:33,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:46:33,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:46:33,278 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:46:33,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:46:33,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:46:33,748 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:46:33,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:46:33,750 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:46:33,751 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 06:46:33,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9843ca88d/6d23694f1ac946e8ab99af2c7b213ab2/FLAGdca38598b [2020-09-25 06:46:34,518 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:46:34,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 06:46:34,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9843ca88d/6d23694f1ac946e8ab99af2c7b213ab2/FLAGdca38598b [2020-09-25 06:46:34,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9843ca88d/6d23694f1ac946e8ab99af2c7b213ab2 [2020-09-25 06:46:34,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:46:34,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:46:34,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:34,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:46:34,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:46:34,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:34" (1/1) ... [2020-09-25 06:46:34,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d85ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:34, skipping insertion in model container [2020-09-25 06:46:34,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:34" (1/1) ... [2020-09-25 06:46:34,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:46:34,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:46:35,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:35,291 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:46:35,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:35,583 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:46:35,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:35 WrapperNode [2020-09-25 06:46:35,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:35,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:46:35,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:46:35,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:46:35,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:35" (1/1) ... [2020-09-25 06:46:35,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:35" (1/1) ... [2020-09-25 06:46:35,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:35" (1/1) ... [2020-09-25 06:46:35,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:35" (1/1) ... [2020-09-25 06:46:35,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:35" (1/1) ... [2020-09-25 06:46:35,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:35" (1/1) ... [2020-09-25 06:46:35,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:35" (1/1) ... [2020-09-25 06:46:35,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:46:35,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:46:35,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:46:35,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:46:35,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:35" (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 06:46:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:46:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:46:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:46:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:46:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:46:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:46:35,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:46:35,816 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:46:35,816 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:46:35,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:46:35,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:46:37,167 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:46:37,167 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:46:37,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:37 BoogieIcfgContainer [2020-09-25 06:46:37,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:46:37,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:46:37,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:46:37,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:46:37,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:46:34" (1/3) ... [2020-09-25 06:46:37,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fd4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:37, skipping insertion in model container [2020-09-25 06:46:37,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:35" (2/3) ... [2020-09-25 06:46:37,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fd4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:37, skipping insertion in model container [2020-09-25 06:46:37,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:37" (3/3) ... [2020-09-25 06:46:37,185 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label04.c [2020-09-25 06:46:37,197 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:46:37,208 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:46:37,233 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:46:37,269 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:46:37,269 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:46:37,269 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:46:37,269 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:46:37,270 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:46:37,270 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:46:37,270 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:46:37,270 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:46:37,300 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:46:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 06:46:37,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:37,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:37,314 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:37,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:37,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1435975873, now seen corresponding path program 1 times [2020-09-25 06:46:37,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:37,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856127885] [2020-09-25 06:46:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:38,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:38,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:38,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 06:46:38,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:46:38,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-09-25 06:46:38,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:38,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:38,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:46:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 06:46:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:46:38,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:38,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:38,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:38,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:38,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:46:38,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:38,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:46:38,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:38,478 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 06:46:38,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856127885] [2020-09-25 06:46:38,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:38,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:46:38,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808654011] [2020-09-25 06:46:38,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:46:38,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:38,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:46:38,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:46:38,515 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:46:40,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:40,352 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 06:46:40,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:46:40,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-25 06:46:40,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:40,379 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 06:46:40,379 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 06:46:40,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:40,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 06:46:40,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 06:46:40,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 06:46:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 06:46:40,483 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 85 [2020-09-25 06:46:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:40,484 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 06:46:40,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:46:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 06:46:40,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 06:46:40,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:40,495 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:46:40,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:46:40,496 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:40,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:40,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2117933451, now seen corresponding path program 1 times [2020-09-25 06:46:40,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:40,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728083622] [2020-09-25 06:46:40,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:40,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:41,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:42,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:42,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:42,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 06:46:42,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:46:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2234 [2020-09-25 06:46:42,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:42,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:46:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:46:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:42,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:42,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:42,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:42,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:42,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:42,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:42,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:42,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:42,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:42,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:42,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:46:42,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:42,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:46:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:42,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:43,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:43,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:46:43,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:43,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 06:46:43,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:43,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:46:43,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:43,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728083622] [2020-09-25 06:46:43,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:43,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:46:43,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9018913] [2020-09-25 06:46:43,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:43,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:43,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:43,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:43,146 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 06:46:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:45,288 INFO L93 Difference]: Finished difference Result 1477 states and 1881 transitions. [2020-09-25 06:46:45,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:46:45,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-25 06:46:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:45,294 INFO L225 Difference]: With dead ends: 1477 [2020-09-25 06:46:45,295 INFO L226 Difference]: Without dead ends: 949 [2020-09-25 06:46:45,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:46:45,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-09-25 06:46:45,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 888. [2020-09-25 06:46:45,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-09-25 06:46:45,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1123 transitions. [2020-09-25 06:46:45,350 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1123 transitions. Word has length 165 [2020-09-25 06:46:45,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:45,351 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1123 transitions. [2020-09-25 06:46:45,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:45,351 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1123 transitions. [2020-09-25 06:46:45,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 06:46:45,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:45,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:46:45,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:46:45,360 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:45,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:45,360 INFO L82 PathProgramCache]: Analyzing trace with hash 185368306, now seen corresponding path program 1 times [2020-09-25 06:46:45,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:45,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911064339] [2020-09-25 06:46:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:45,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:45,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:45,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:45,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:48,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:50,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:50,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 06:46:50,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:50,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 06:46:50,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:50,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:46:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:46:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 06:46:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:50,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:50,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:50,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:50,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:50,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:46:50,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:50,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:50,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:50,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:46:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:50,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:50,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:46:50,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 06:46:50,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:50,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:46:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:46:50,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:50,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911064339] [2020-09-25 06:46:50,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:50,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:46:50,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258920673] [2020-09-25 06:46:50,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:46:50,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:50,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:46:50,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:50,823 INFO L87 Difference]: Start difference. First operand 888 states and 1123 transitions. Second operand 6 states. [2020-09-25 06:46:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:53,625 INFO L93 Difference]: Finished difference Result 2766 states and 3690 transitions. [2020-09-25 06:46:53,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:46:53,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2020-09-25 06:46:53,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:53,642 INFO L225 Difference]: With dead ends: 2766 [2020-09-25 06:46:53,642 INFO L226 Difference]: Without dead ends: 1893 [2020-09-25 06:46:53,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:46:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2020-09-25 06:46:53,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1822. [2020-09-25 06:46:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1822 states. [2020-09-25 06:46:53,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2422 transitions. [2020-09-25 06:46:53,743 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2422 transitions. Word has length 174 [2020-09-25 06:46:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:53,750 INFO L479 AbstractCegarLoop]: Abstraction has 1822 states and 2422 transitions. [2020-09-25 06:46:53,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:46:53,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2422 transitions. [2020-09-25 06:46:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 06:46:53,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:53,756 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:46:53,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:46:53,757 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:53,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:53,757 INFO L82 PathProgramCache]: Analyzing trace with hash 969467690, now seen corresponding path program 1 times [2020-09-25 06:46:53,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:53,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253518338] [2020-09-25 06:46:53,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:53,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:54,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:55,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:56,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 06:46:56,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:46:56,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2897 [2020-09-25 06:46:56,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:56,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:46:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:46:56,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:56,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:56,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:56,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:56,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:56,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 06:46:56,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:56,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:46:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:56,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:46:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:56,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:56,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 06:46:56,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:56,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 06:46:56,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:56,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:46:56,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:57,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253518338] [2020-09-25 06:46:57,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:57,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:46:57,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142409740] [2020-09-25 06:46:57,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:57,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:57,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:57,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:57,069 INFO L87 Difference]: Start difference. First operand 1822 states and 2422 transitions. Second operand 7 states. [2020-09-25 06:46:59,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:59,382 INFO L93 Difference]: Finished difference Result 4919 states and 6852 transitions. [2020-09-25 06:46:59,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:46:59,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 06:46:59,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:59,404 INFO L225 Difference]: With dead ends: 4919 [2020-09-25 06:46:59,404 INFO L226 Difference]: Without dead ends: 3112 [2020-09-25 06:46:59,411 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 06:46:59,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2020-09-25 06:46:59,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 2622. [2020-09-25 06:46:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2622 states. [2020-09-25 06:46:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3439 transitions. [2020-09-25 06:46:59,515 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3439 transitions. Word has length 176 [2020-09-25 06:46:59,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:59,516 INFO L479 AbstractCegarLoop]: Abstraction has 2622 states and 3439 transitions. [2020-09-25 06:46:59,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:59,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3439 transitions. [2020-09-25 06:46:59,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 06:46:59,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:59,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:59,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:46:59,525 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:59,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:59,525 INFO L82 PathProgramCache]: Analyzing trace with hash -422841132, now seen corresponding path program 1 times [2020-09-25 06:46:59,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:59,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929353477] [2020-09-25 06:46:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:59,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:00,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:01,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:02,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:03,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:03,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:03,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:04,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:04,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 06:47:04,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:47:04,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 06:47:04,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:04,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:47:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:47:04,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:04,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:04,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:04,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:04,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:04,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:47:04,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:04,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:04,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:04,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:04,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:04,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:04,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:04,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:04,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:04,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:04,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 06:47:04,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:04,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:47:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:04,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:47:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:04,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:04,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:04,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:47:04,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:04,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 06:47:04,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:04,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:47:04,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:05,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929353477] [2020-09-25 06:47:05,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:05,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:05,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199063479] [2020-09-25 06:47:05,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:05,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:05,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:05,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:05,091 INFO L87 Difference]: Start difference. First operand 2622 states and 3439 transitions. Second operand 7 states. [2020-09-25 06:47:07,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:07,448 INFO L93 Difference]: Finished difference Result 6237 states and 8539 transitions. [2020-09-25 06:47:07,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:47:07,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-09-25 06:47:07,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:07,468 INFO L225 Difference]: With dead ends: 6237 [2020-09-25 06:47:07,468 INFO L226 Difference]: Without dead ends: 3290 [2020-09-25 06:47:07,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:47:07,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2020-09-25 06:47:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 2758. [2020-09-25 06:47:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2758 states. [2020-09-25 06:47:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 3517 transitions. [2020-09-25 06:47:07,578 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 3517 transitions. Word has length 257 [2020-09-25 06:47:07,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:07,578 INFO L479 AbstractCegarLoop]: Abstraction has 2758 states and 3517 transitions. [2020-09-25 06:47:07,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:07,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 3517 transitions. [2020-09-25 06:47:07,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-09-25 06:47:07,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:07,586 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:07,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:07,587 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:07,587 INFO L82 PathProgramCache]: Analyzing trace with hash 226992585, now seen corresponding path program 1 times [2020-09-25 06:47:07,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:07,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842277473] [2020-09-25 06:47:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:07,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:08,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:09,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:09,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:12,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:12,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-09-25 06:47:12,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:47:12,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 06:47:12,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:12,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 06:47:12,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:12,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:12,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:12,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:12,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:12,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:12,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:47:12,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:12,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:12,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:12,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:12,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:12,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:12,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:12,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:12,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:12,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 06:47:12,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:12,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 06:47:12,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:12,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 06:47:12,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:12,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 06:47:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:12,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:12,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:47:12,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:47:13,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:13,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 06:47:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 138 proven. 67 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:47:13,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842277473] [2020-09-25 06:47:13,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:13,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:13,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873110734] [2020-09-25 06:47:13,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:13,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:13,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:13,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:13,074 INFO L87 Difference]: Start difference. First operand 2758 states and 3517 transitions. Second operand 7 states. [2020-09-25 06:47:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:15,029 INFO L93 Difference]: Finished difference Result 5377 states and 6935 transitions. [2020-09-25 06:47:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:47:15,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-09-25 06:47:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:15,044 INFO L225 Difference]: With dead ends: 5377 [2020-09-25 06:47:15,044 INFO L226 Difference]: Without dead ends: 2784 [2020-09-25 06:47:15,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:47:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2020-09-25 06:47:15,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2770. [2020-09-25 06:47:15,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2020-09-25 06:47:15,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3558 transitions. [2020-09-25 06:47:15,128 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3558 transitions. Word has length 270 [2020-09-25 06:47:15,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:15,129 INFO L479 AbstractCegarLoop]: Abstraction has 2770 states and 3558 transitions. [2020-09-25 06:47:15,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:15,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3558 transitions. [2020-09-25 06:47:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-25 06:47:15,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:15,139 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:15,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:47:15,139 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:15,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:15,140 INFO L82 PathProgramCache]: Analyzing trace with hash -418949297, now seen corresponding path program 1 times [2020-09-25 06:47:15,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:15,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821517768] [2020-09-25 06:47:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:15,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:15,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:15,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:16,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:17,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:20,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:20,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-09-25 06:47:20,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:47:20,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:47:20,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:20,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:20,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:20,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:47:20,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 06:47:20,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:20,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:20,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:20,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:20,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:20,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:20,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:47:20,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:20,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:20,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:20,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:20,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:20,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:20,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:20,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:20,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:20,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:20,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:20,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 06:47:20,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:20,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:47:20,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:20,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:47:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:20,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:20,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:20,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 06:47:20,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:20,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 06:47:20,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:20,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:20,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 06:47:20,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:20,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821517768] [2020-09-25 06:47:20,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:20,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:47:20,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916355452] [2020-09-25 06:47:20,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:20,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:20,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:20,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:20,707 INFO L87 Difference]: Start difference. First operand 2770 states and 3558 transitions. Second operand 8 states.