/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:20,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:20,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:20,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:20,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:20,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:20,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:20,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:20,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:20,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:20,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:20,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:20,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:20,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:20,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:20,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:20,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:20,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:20,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:20,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:20,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:20,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:20,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:20,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:20,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:20,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:20,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:20,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:20,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:20,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:20,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:20,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:20,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:20,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:20,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:20,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:20,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:20,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:20,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:20,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:20,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:20,238 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 11:18:20,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:20,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:20,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:20,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:20,267 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:20,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:20,267 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:20,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:20,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:20,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:20,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:20,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:20,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:20,269 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:20,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:20,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:20,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:20,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:20,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:20,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:20,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:20,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:20,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:20,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:20,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:20,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:20,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:20,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:20,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:20,272 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:18:20,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:20,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:20,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:20,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:20,773 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:20,774 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 11:18:20,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8df62a895/4799fc3af6784c4a87d5d32ae3de65fe/FLAGf93a35e7e [2020-09-25 11:18:21,522 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:21,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 11:18:21,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8df62a895/4799fc3af6784c4a87d5d32ae3de65fe/FLAGf93a35e7e [2020-09-25 11:18:21,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8df62a895/4799fc3af6784c4a87d5d32ae3de65fe [2020-09-25 11:18:21,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:21,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:21,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:21,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:21,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:21,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:21" (1/1) ... [2020-09-25 11:18:21,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:21, skipping insertion in model container [2020-09-25 11:18:21,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:21" (1/1) ... [2020-09-25 11:18:21,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:21,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:22,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:22,477 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:22,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:22,637 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:22,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:22 WrapperNode [2020-09-25 11:18:22,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:22,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:22,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:22,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:22,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:22" (1/1) ... [2020-09-25 11:18:22,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:22" (1/1) ... [2020-09-25 11:18:22,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:22" (1/1) ... [2020-09-25 11:18:22,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:22" (1/1) ... [2020-09-25 11:18:22,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:22" (1/1) ... [2020-09-25 11:18:22,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:22" (1/1) ... [2020-09-25 11:18:22,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:22" (1/1) ... [2020-09-25 11:18:22,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:22,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:22,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:22,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:22,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:22" (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 11:18:22,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:22,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:22,854 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:22,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:18:24,400 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:18:24,401 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:18:24,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:24 BoogieIcfgContainer [2020-09-25 11:18:24,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:18:24,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:18:24,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:18:24,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:18:24,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:21" (1/3) ... [2020-09-25 11:18:24,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:24, skipping insertion in model container [2020-09-25 11:18:24,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:22" (2/3) ... [2020-09-25 11:18:24,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:24, skipping insertion in model container [2020-09-25 11:18:24,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:24" (3/3) ... [2020-09-25 11:18:24,420 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2020-09-25 11:18:24,432 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:18:24,443 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:18:24,466 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:18:24,501 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:18:24,501 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:18:24,502 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:18:24,502 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:18:24,502 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:18:24,502 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:18:24,502 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:18:24,502 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:18:24,534 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:18:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 11:18:24,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:24,546 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] [2020-09-25 11:18:24,547 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:24,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:24,553 INFO L82 PathProgramCache]: Analyzing trace with hash -843476993, now seen corresponding path program 1 times [2020-09-25 11:18:24,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:24,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791069953] [2020-09-25 11:18:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:24,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:25,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 11:18:25,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:18:25,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-09-25 11:18:25,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:25,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:18:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 11:18:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:18:25,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:25,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:25,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:25,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:18:25,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:25,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:25,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:25,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:25,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:18:25,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:25,812 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 11:18:25,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791069953] [2020-09-25 11:18:25,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:25,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:18:25,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713535654] [2020-09-25 11:18:25,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:25,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:25,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:25,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:25,847 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 11:18:28,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:28,621 INFO L93 Difference]: Finished difference Result 1226 states and 1798 transitions. [2020-09-25 11:18:28,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:18:28,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-09-25 11:18:28,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:28,674 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 11:18:28,675 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 11:18:28,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:18:28,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 11:18:28,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 11:18:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 11:18:28,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 902 transitions. [2020-09-25 11:18:28,877 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 902 transitions. Word has length 64 [2020-09-25 11:18:28,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:28,878 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 902 transitions. [2020-09-25 11:18:28,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:28,878 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 902 transitions. [2020-09-25 11:18:28,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 11:18:28,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:28,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:28,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:18:28,898 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:28,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:28,900 INFO L82 PathProgramCache]: Analyzing trace with hash -685131667, now seen corresponding path program 1 times [2020-09-25 11:18:28,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:28,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595747787] [2020-09-25 11:18:28,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:29,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:29,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:29,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:29,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:31,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:31,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:32,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:33,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:33,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 11:18:33,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:18:33,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 11:18:33,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:33,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 11:18:33,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:34,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:34,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:34,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:34,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:34,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:34,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:18:34,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:34,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:34,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:34,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:34,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:34,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:18:34,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:34,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 11:18:34,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:34,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:34,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:18:34,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:34,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595747787] [2020-09-25 11:18:34,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:34,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:18:34,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805764406] [2020-09-25 11:18:34,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:18:34,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:34,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:18:34,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:18:34,451 INFO L87 Difference]: Start difference. First operand 695 states and 902 transitions. Second operand 8 states. [2020-09-25 11:18:37,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:37,440 INFO L93 Difference]: Finished difference Result 2492 states and 3498 transitions. [2020-09-25 11:18:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:18:37,441 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-25 11:18:37,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:37,461 INFO L225 Difference]: With dead ends: 2492 [2020-09-25 11:18:37,461 INFO L226 Difference]: Without dead ends: 1812 [2020-09-25 11:18:37,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:18:37,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-09-25 11:18:37,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1363. [2020-09-25 11:18:37,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-09-25 11:18:37,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1798 transitions. [2020-09-25 11:18:37,551 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1798 transitions. Word has length 153 [2020-09-25 11:18:37,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:37,556 INFO L479 AbstractCegarLoop]: Abstraction has 1363 states and 1798 transitions. [2020-09-25 11:18:37,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:18:37,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1798 transitions. [2020-09-25 11:18:37,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 11:18:37,561 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:37,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:37,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:37,562 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:37,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:37,562 INFO L82 PathProgramCache]: Analyzing trace with hash -188026709, now seen corresponding path program 1 times [2020-09-25 11:18:37,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:37,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864589332] [2020-09-25 11:18:37,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:37,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:37,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:40,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:40,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:40,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:42,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:42,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 11:18:42,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:42,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:18:42,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:42,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:18:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 11:18:42,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:42,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:42,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:42,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:42,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:18:42,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:42,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:18:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:18:42,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:42,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:42,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:43,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:18:43,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:43,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-25 11:18:43,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:43,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:18:43,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:43,300 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:43,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864589332] [2020-09-25 11:18:43,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:43,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:18:43,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585066357] [2020-09-25 11:18:43,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:18:43,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:43,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:18:43,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:43,303 INFO L87 Difference]: Start difference. First operand 1363 states and 1798 transitions. Second operand 10 states. [2020-09-25 11:18:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:46,452 INFO L93 Difference]: Finished difference Result 3541 states and 4862 transitions. [2020-09-25 11:18:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:18:46,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-25 11:18:46,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:46,473 INFO L225 Difference]: With dead ends: 3541 [2020-09-25 11:18:46,474 INFO L226 Difference]: Without dead ends: 2167 [2020-09-25 11:18:46,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:18:46,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2020-09-25 11:18:46,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1971. [2020-09-25 11:18:46,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1971 states. [2020-09-25 11:18:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2543 transitions. [2020-09-25 11:18:46,559 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2543 transitions. Word has length 156 [2020-09-25 11:18:46,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:46,561 INFO L479 AbstractCegarLoop]: Abstraction has 1971 states and 2543 transitions. [2020-09-25 11:18:46,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:18:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2543 transitions. [2020-09-25 11:18:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 11:18:46,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:46,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:46,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:46,568 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:46,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:46,568 INFO L82 PathProgramCache]: Analyzing trace with hash 858722410, now seen corresponding path program 1 times [2020-09-25 11:18:46,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:46,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009446363] [2020-09-25 11:18:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:51,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 11:18:51,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:18:51,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 11:18:51,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:51,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:18:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 11:18:51,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:51,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:51,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:51,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:51,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:51,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:18:51,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:51,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:51,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:18:51,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:18:51,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:51,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:52,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:52,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 11:18:52,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:52,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 11:18:52,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:52,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:52,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:52,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:52,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 11:18:52,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:18:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:52,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009446363] [2020-09-25 11:18:52,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:52,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:18:52,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057614783] [2020-09-25 11:18:52,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:18:52,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:52,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:18:52,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:18:52,494 INFO L87 Difference]: Start difference. First operand 1971 states and 2543 transitions. Second operand 8 states. [2020-09-25 11:18:55,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:55,369 INFO L93 Difference]: Finished difference Result 5965 states and 8200 transitions. [2020-09-25 11:18:55,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:18:55,370 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2020-09-25 11:18:55,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:55,392 INFO L225 Difference]: With dead ends: 5965 [2020-09-25 11:18:55,393 INFO L226 Difference]: Without dead ends: 4159 [2020-09-25 11:18:55,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:18:55,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4159 states. [2020-09-25 11:18:55,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4159 to 3983. [2020-09-25 11:18:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3983 states. [2020-09-25 11:18:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 5096 transitions. [2020-09-25 11:18:55,531 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 5096 transitions. Word has length 210 [2020-09-25 11:18:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:55,532 INFO L479 AbstractCegarLoop]: Abstraction has 3983 states and 5096 transitions. [2020-09-25 11:18:55,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:18:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 5096 transitions. [2020-09-25 11:18:55,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 11:18:55,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:55,539 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, 2, 2, 2, 2, 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] [2020-09-25 11:18:55,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:55,539 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:55,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:55,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1595178403, now seen corresponding path program 1 times [2020-09-25 11:18:55,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:55,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119703324] [2020-09-25 11:18:55,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:55,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:57,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:58,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:00,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:00,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 11:19:00,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:00,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:19:00,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:00,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:00,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:00,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:00,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:19:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:00,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:00,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:00,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:00,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:00,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:00,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:19:00,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:00,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:00,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:00,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:00,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:00,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:00,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:00,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:00,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:00,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:00,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 11:19:00,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:00,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:00,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:00,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:00,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:19:00,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:00,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:00,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:01,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:01,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 11:19:01,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:01,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:01,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:01,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:01,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:01,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 11:19:01,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119703324] [2020-09-25 11:19:01,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:01,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:19:01,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010958460] [2020-09-25 11:19:01,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:19:01,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:01,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:19:01,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:19:01,293 INFO L87 Difference]: Start difference. First operand 3983 states and 5096 transitions. Second operand 9 states. [2020-09-25 11:19:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:05,521 INFO L93 Difference]: Finished difference Result 9656 states and 12721 transitions. [2020-09-25 11:19:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:19:05,522 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 232 [2020-09-25 11:19:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:05,555 INFO L225 Difference]: With dead ends: 9656 [2020-09-25 11:19:05,555 INFO L226 Difference]: Without dead ends: 5838 [2020-09-25 11:19:05,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:19:05,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2020-09-25 11:19:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 5597. [2020-09-25 11:19:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5597 states. [2020-09-25 11:19:05,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 7259 transitions. [2020-09-25 11:19:05,731 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 7259 transitions. Word has length 232 [2020-09-25 11:19:05,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:05,731 INFO L479 AbstractCegarLoop]: Abstraction has 5597 states and 7259 transitions. [2020-09-25 11:19:05,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:19:05,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 7259 transitions. [2020-09-25 11:19:05,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 11:19:05,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:05,738 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, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:05,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:19:05,738 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:05,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:05,739 INFO L82 PathProgramCache]: Analyzing trace with hash 522738282, now seen corresponding path program 1 times [2020-09-25 11:19:05,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:05,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553510937] [2020-09-25 11:19:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:05,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:05,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:06,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:06,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking...