/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=0.4 --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_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:34:57,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:34:57,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:34:57,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:34:57,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:34:57,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:34:57,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:34:57,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:34:57,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:34:57,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:34:57,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:34:57,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:34:57,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:34:57,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:34:57,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:34:57,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:34:57,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:34:57,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:34:57,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:34:57,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:34:57,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:34:57,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:34:57,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:34:57,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:34:57,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:34:57,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:34:57,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:34:57,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:34:57,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:34:57,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:34:57,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:34:57,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:34:57,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:34:57,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:34:57,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:34:57,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:34:57,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:34:57,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:34:57,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:34:57,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:34:57,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:34:57,238 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 13:34:57,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:34:57,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:34:57,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:34:57,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:34:57,266 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:34:57,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:34:57,267 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:34:57,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:34:57,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:34:57,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:34:57,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:34:57,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:34:57,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:34:57,268 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:34:57,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:34:57,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:34:57,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:34:57,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:34:57,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:34:57,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:34:57,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:34:57,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:57,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:34:57,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:34:57,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:34:57,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:34:57,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:34:57,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:34:57,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:34:57,271 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:34:57,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:34:57,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:34:57,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:34:57,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:34:57,733 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:34:57,734 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 13:34:57,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8d1f98a8/12e524c4bdff49ecbba703115866cca9/FLAG7f9139703 [2020-09-25 13:34:58,445 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:34:58,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 13:34:58,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8d1f98a8/12e524c4bdff49ecbba703115866cca9/FLAG7f9139703 [2020-09-25 13:34:58,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8d1f98a8/12e524c4bdff49ecbba703115866cca9 [2020-09-25 13:34:58,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:34:58,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:34:58,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:58,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:34:58,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:34:58,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:58" (1/1) ... [2020-09-25 13:34:58,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5f9fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:58, skipping insertion in model container [2020-09-25 13:34:58,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:58" (1/1) ... [2020-09-25 13:34:58,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:34:58,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:34:59,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:59,263 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:34:59,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:59,495 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:34:59,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:59 WrapperNode [2020-09-25 13:34:59,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:59,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:34:59,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:34:59,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:34:59,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:59" (1/1) ... [2020-09-25 13:34:59,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:59" (1/1) ... [2020-09-25 13:34:59,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:59" (1/1) ... [2020-09-25 13:34:59,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:59" (1/1) ... [2020-09-25 13:34:59,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:59" (1/1) ... [2020-09-25 13:34:59,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:59" (1/1) ... [2020-09-25 13:34:59,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:59" (1/1) ... [2020-09-25 13:34:59,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:34:59,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:34:59,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:34:59,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:34:59,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:59" (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 13:34:59,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:34:59,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:34:59,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:34:59,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:34:59,763 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:34:59,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:34:59,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:34:59,763 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:34:59,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:34:59,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:34:59,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:01,196 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:01,196 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:01,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:01 BoogieIcfgContainer [2020-09-25 13:35:01,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:01,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:01,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:01,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:01,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:34:58" (1/3) ... [2020-09-25 13:35:01,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7035905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:01, skipping insertion in model container [2020-09-25 13:35:01,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:59" (2/3) ... [2020-09-25 13:35:01,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7035905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:01, skipping insertion in model container [2020-09-25 13:35:01,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:01" (3/3) ... [2020-09-25 13:35:01,224 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-09-25 13:35:01,234 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:01,245 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:01,267 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:01,300 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:01,300 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:01,300 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:01,300 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:01,300 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:01,301 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:01,301 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:01,301 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:01,339 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:35:01,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 13:35:01,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:01,350 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] [2020-09-25 13:35:01,351 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:01,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:01,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1046899727, now seen corresponding path program 1 times [2020-09-25 13:35:01,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:01,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086755843] [2020-09-25 13:35:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:01,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:02,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:02,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 13:35:02,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:02,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-09-25 13:35:02,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:02,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:02,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:02,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:35:02,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:35:02,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:02,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:02,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:02,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:02,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:35:02,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:02,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:02,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:02,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:02,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:02,394 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 13:35:02,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086755843] [2020-09-25 13:35:02,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:02,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:35:02,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740313934] [2020-09-25 13:35:02,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:35:02,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:02,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:35:02,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:02,426 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 13:35:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:04,964 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 13:35:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:35:04,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-09-25 13:35:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:04,995 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 13:35:04,996 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 13:35:05,014 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 13:35:05,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 13:35:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 13:35:05,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 13:35:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 13:35:05,127 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 68 [2020-09-25 13:35:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:05,128 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 13:35:05,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:35:05,128 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 13:35:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 13:35:05,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:05,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:05,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:05,141 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:05,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:05,141 INFO L82 PathProgramCache]: Analyzing trace with hash -160289432, now seen corresponding path program 1 times [2020-09-25 13:35:05,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:05,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068300645] [2020-09-25 13:35:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:05,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:06,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:06,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:07,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:09,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:10,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:10,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 13:35:10,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:35:10,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:35:10,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:10,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:10,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:10,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:10,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 13:35:10,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:10,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:10,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:10,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:10,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:10,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:10,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:35:10,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:10,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:10,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:10,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:10,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:10,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:35:10,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:10,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 13:35:10,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:10,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:10,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:10,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:10,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:35:10,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:10,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068300645] [2020-09-25 13:35:10,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:10,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:35:10,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830271208] [2020-09-25 13:35:10,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:10,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:10,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:10,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:10,701 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-25 13:35:12,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:12,773 INFO L93 Difference]: Finished difference Result 1574 states and 2131 transitions. [2020-09-25 13:35:12,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:35:12,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-25 13:35:12,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:12,786 INFO L225 Difference]: With dead ends: 1574 [2020-09-25 13:35:12,786 INFO L226 Difference]: Without dead ends: 894 [2020-09-25 13:35:12,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:35:12,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-25 13:35:12,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 852. [2020-09-25 13:35:12,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-25 13:35:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-25 13:35:12,834 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 151 [2020-09-25 13:35:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:12,835 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-25 13:35:12,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-25 13:35:12,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 13:35:12,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:12,839 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:12,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:12,840 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:12,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:12,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1824017853, now seen corresponding path program 1 times [2020-09-25 13:35:12,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:12,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540872073] [2020-09-25 13:35:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:12,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:13,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:13,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:14,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:14,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:14,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:16,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:16,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 13:35:16,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:35:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4036 [2020-09-25 13:35:16,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:16,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 13:35:16,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:17,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:17,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:17,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:17,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:17,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:17,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:35:17,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:17,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:17,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:17,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:17,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:17,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:17,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:17,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:17,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:17,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:17,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:17,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 13:35:17,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:17,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:17,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:17,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540872073] [2020-09-25 13:35:17,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:17,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:35:17,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293176321] [2020-09-25 13:35:17,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:17,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:17,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:17,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:17,308 INFO L87 Difference]: Start difference. First operand 852 states and 1127 transitions. Second operand 8 states. [2020-09-25 13:35:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:20,619 INFO L93 Difference]: Finished difference Result 2461 states and 3483 transitions. [2020-09-25 13:35:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:20,620 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 157 [2020-09-25 13:35:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:20,640 INFO L225 Difference]: With dead ends: 2461 [2020-09-25 13:35:20,640 INFO L226 Difference]: Without dead ends: 1775 [2020-09-25 13:35:20,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:35:20,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2020-09-25 13:35:20,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1522. [2020-09-25 13:35:20,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-09-25 13:35:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2132 transitions. [2020-09-25 13:35:20,737 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2132 transitions. Word has length 157 [2020-09-25 13:35:20,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:20,742 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 2132 transitions. [2020-09-25 13:35:20,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2132 transitions. [2020-09-25 13:35:20,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 13:35:20,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:20,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:20,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:35:20,754 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:20,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:20,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1830974367, now seen corresponding path program 1 times [2020-09-25 13:35:20,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:20,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103602953] [2020-09-25 13:35:20,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:20,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:24,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:25,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 13:35:25,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:35:25,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:35:25,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:25,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:35:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 13:35:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:25,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:25,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:25,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:25,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:25,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:35:25,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:25,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:25,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:25,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:25,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:35:25,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:25,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:25,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:26,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:26,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 13:35:26,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:26,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 13:35:26,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:26,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:26,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 13:35:26,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:26,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103602953] [2020-09-25 13:35:26,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:26,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:35:26,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469515807] [2020-09-25 13:35:26,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:26,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:26,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:26,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:26,385 INFO L87 Difference]: Start difference. First operand 1522 states and 2132 transitions. Second operand 7 states. [2020-09-25 13:35:28,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:28,774 INFO L93 Difference]: Finished difference Result 3874 states and 5682 transitions. [2020-09-25 13:35:28,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:35:28,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-25 13:35:28,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:28,789 INFO L225 Difference]: With dead ends: 3874 [2020-09-25 13:35:28,789 INFO L226 Difference]: Without dead ends: 2367 [2020-09-25 13:35:28,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:35:28,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2020-09-25 13:35:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2153. [2020-09-25 13:35:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-09-25 13:35:28,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2885 transitions. [2020-09-25 13:35:28,868 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2885 transitions. Word has length 190 [2020-09-25 13:35:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:28,869 INFO L479 AbstractCegarLoop]: Abstraction has 2153 states and 2885 transitions. [2020-09-25 13:35:28,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:28,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2885 transitions. [2020-09-25 13:35:28,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 13:35:28,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:28,875 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, 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 13:35:28,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:35:28,876 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:28,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:28,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1649911016, now seen corresponding path program 1 times [2020-09-25 13:35:28,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:28,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890931701] [2020-09-25 13:35:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:28,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:29,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:29,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:29,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:33,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:33,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 13:35:33,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:35:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:35:33,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:33,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:35:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 13:35:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:33,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:33,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:34,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:34,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:34,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:34,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:35:34,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:34,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:34,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:34,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:34,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:34,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:34,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:34,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:34,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:34,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:34,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:34,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 13:35:34,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:34,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:35:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:34,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:35:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:34,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:34,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:34,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:35:34,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:34,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 13:35:34,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:34,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:34,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:34,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:35:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 13:35:34,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890931701] [2020-09-25 13:35:34,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:34,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:35:34,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258361978] [2020-09-25 13:35:34,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:34,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:34,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:34,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:34,438 INFO L87 Difference]: Start difference. First operand 2153 states and 2885 transitions. Second operand 7 states. [2020-09-25 13:35:36,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:36,391 INFO L93 Difference]: Finished difference Result 5147 states and 8040 transitions. [2020-09-25 13:35:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:36,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-09-25 13:35:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:36,422 INFO L225 Difference]: With dead ends: 5147 [2020-09-25 13:35:36,422 INFO L226 Difference]: Without dead ends: 3159 [2020-09-25 13:35:36,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:35:36,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-09-25 13:35:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 2487. [2020-09-25 13:35:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2487 states. [2020-09-25 13:35:36,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 3232 transitions. [2020-09-25 13:35:36,540 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 3232 transitions. Word has length 230 [2020-09-25 13:35:36,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:36,540 INFO L479 AbstractCegarLoop]: Abstraction has 2487 states and 3232 transitions. [2020-09-25 13:35:36,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:36,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 3232 transitions. [2020-09-25 13:35:36,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 13:35:36,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:36,546 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, 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 13:35:36,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:35:36,547 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:36,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:36,547 INFO L82 PathProgramCache]: Analyzing trace with hash 706836333, now seen corresponding path program 1 times [2020-09-25 13:35:36,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:36,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342489724] [2020-09-25 13:35:36,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:36,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:37,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:39,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:39,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:39,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:41,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 13:35:41,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:35:41,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:35:41,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:41,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:41,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:41,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:41,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:35:41,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:41,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:41,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:41,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:41,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:35:41,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:41,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:41,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:41,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:41,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:41,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:41,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 13:35:41,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:41,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:41,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:35:41,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:35:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:41,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:42,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:42,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:42,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 13:35:42,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:42,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:42,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 13:35:42,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342489724] [2020-09-25 13:35:42,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:42,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:35:42,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57657306] [2020-09-25 13:35:42,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:35:42,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:42,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:35:42,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:35:42,244 INFO L87 Difference]: Start difference. First operand 2487 states and 3232 transitions. Second operand 9 states. [2020-09-25 13:35:45,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:45,764 INFO L93 Difference]: Finished difference Result 6215 states and 8538 transitions. [2020-09-25 13:35:45,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:35:45,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 236 [2020-09-25 13:35:45,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:45,782 INFO L225 Difference]: With dead ends: 6215 [2020-09-25 13:35:45,783 INFO L226 Difference]: Without dead ends: 3893 [2020-09-25 13:35:45,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:35:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2020-09-25 13:35:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 3650. [2020-09-25 13:35:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2020-09-25 13:35:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 4864 transitions. [2020-09-25 13:35:45,889 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 4864 transitions. Word has length 236 [2020-09-25 13:35:45,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:45,889 INFO L479 AbstractCegarLoop]: Abstraction has 3650 states and 4864 transitions. [2020-09-25 13:35:45,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:35:45,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 4864 transitions. [2020-09-25 13:35:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 13:35:45,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:45,895 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, 2, 2, 2, 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 13:35:45,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:35:45,896 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:45,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1174720762, now seen corresponding path program 1 times [2020-09-25 13:35:45,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:45,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659616174] [2020-09-25 13:35:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:45,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:46,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:46,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:46,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:47,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking...