/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:31:38,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:31:38,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:31:38,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:31:38,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:31:38,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:31:38,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:31:38,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:31:38,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:31:38,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:31:38,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:31:38,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:31:38,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:31:38,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:31:38,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:31:38,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:31:38,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:31:38,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:31:38,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:31:38,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:31:38,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:31:38,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:31:38,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:31:38,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:31:38,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:31:38,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:31:38,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:31:38,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:31:38,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:31:38,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:31:38,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:31:38,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:31:38,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:31:38,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:31:38,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:31:38,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:31:38,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:31:38,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:31:38,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:31:38,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:31:38,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:31:38,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:31:38,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:31:38,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:31:38,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:31:38,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:31:38,222 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:31:38,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:31:38,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:31:38,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:31:38,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:31:38,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:31:38,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:31:38,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:31:38,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:31:38,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:31:38,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:31:38,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:31:38,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:31:38,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:31:38,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:31:38,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:31:38,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:31:38,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:31:38,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:31:38,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:31:38,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:31:38,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:31:38,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:31:38,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:31:38,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:31:38,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:31:38,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:31:38,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:31:38,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:31:38,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:31:38,546 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:31:38,547 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label23.c [2020-10-13 09:31:38,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45120f363/70d0972e114f456f9c045455c482f6ee/FLAG695976f04 [2020-10-13 09:31:39,295 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:31:39,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label23.c [2020-10-13 09:31:39,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45120f363/70d0972e114f456f9c045455c482f6ee/FLAG695976f04 [2020-10-13 09:31:39,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45120f363/70d0972e114f456f9c045455c482f6ee [2020-10-13 09:31:39,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:31:39,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:31:39,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:31:39,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:31:39,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:31:39,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:31:39" (1/1) ... [2020-10-13 09:31:39,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:39, skipping insertion in model container [2020-10-13 09:31:39,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:31:39" (1/1) ... [2020-10-13 09:31:39,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:31:39,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:31:40,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:31:40,796 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:31:41,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:31:41,292 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:31:41,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:41 WrapperNode [2020-10-13 09:31:41,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:31:41,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:31:41,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:31:41,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:31:41,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:41" (1/1) ... [2020-10-13 09:31:41,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:41" (1/1) ... [2020-10-13 09:31:41,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:41" (1/1) ... [2020-10-13 09:31:41,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:41" (1/1) ... [2020-10-13 09:31:41,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:41" (1/1) ... [2020-10-13 09:31:41,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:41" (1/1) ... [2020-10-13 09:31:41,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:41" (1/1) ... [2020-10-13 09:31:41,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:31:41,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:31:41,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:31:41,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:31:41,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:31:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:31:41,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:31:41,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:31:41,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:31:41,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:31:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:31:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:31:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:31:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:31:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:31:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:31:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:31:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:31:50,321 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:31:50,321 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:31:50,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:31:50 BoogieIcfgContainer [2020-10-13 09:31:50,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:31:50,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:31:50,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:31:50,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:31:50,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:31:39" (1/3) ... [2020-10-13 09:31:50,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e93b22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:31:50, skipping insertion in model container [2020-10-13 09:31:50,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:41" (2/3) ... [2020-10-13 09:31:50,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e93b22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:31:50, skipping insertion in model container [2020-10-13 09:31:50,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:31:50" (3/3) ... [2020-10-13 09:31:50,338 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label23.c [2020-10-13 09:31:50,349 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:31:50,358 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:31:50,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:31:50,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:31:50,400 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:31:50,400 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:31:50,400 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:31:50,400 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:31:50,400 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:31:50,401 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:31:50,401 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:31:50,432 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:31:50,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 09:31:50,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:50,441 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] [2020-10-13 09:31:50,442 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:50,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:50,449 INFO L82 PathProgramCache]: Analyzing trace with hash -722690823, now seen corresponding path program 1 times [2020-10-13 09:31:50,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:50,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496695506] [2020-10-13 09:31:50,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:50,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:51,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:51,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 09:31:51,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:51,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-13 09:31:51,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:31:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:31:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:31:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:31:51,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:51,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:51,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:51,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:51,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:31:51,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:31:51,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:31:51,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496695506] [2020-10-13 09:31:51,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:31:51,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:31:51,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073616790] [2020-10-13 09:31:51,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:31:51,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:51,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:31:51,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:31:51,257 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:32:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:01,203 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-13 09:32:01,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:01,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-13 09:32:01,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:01,238 INFO L225 Difference]: With dead ends: 1692 [2020-10-13 09:32:01,238 INFO L226 Difference]: Without dead ends: 1012 [2020-10-13 09:32:01,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:01,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-13 09:32:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-13 09:32:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:32:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-13 09:32:01,367 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 27 [2020-10-13 09:32:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:01,368 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-13 09:32:01,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:32:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-13 09:32:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 09:32:01,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:01,372 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:32:01,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:32:01,373 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:01,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:01,374 INFO L82 PathProgramCache]: Analyzing trace with hash 237141423, now seen corresponding path program 1 times [2020-10-13 09:32:01,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:01,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589923501] [2020-10-13 09:32:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:02,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:02,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:02,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:32:02,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:32:02,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-10-13 09:32:02,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:32:02,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:32:02,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:32:02,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:02,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:02,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:02,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:02,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:02,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:32:02,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:02,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:02,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:02,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:02,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:02,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:32:02,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:32:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:32:02,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 09:32:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:02,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589923501] [2020-10-13 09:32:02,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:02,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:02,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815248262] [2020-10-13 09:32:02,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:02,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:02,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:02,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:02,797 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-13 09:32:12,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:12,161 INFO L93 Difference]: Finished difference Result 2884 states and 4479 transitions. [2020-10-13 09:32:12,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:12,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 09:32:12,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:12,179 INFO L225 Difference]: With dead ends: 2884 [2020-10-13 09:32:12,180 INFO L226 Difference]: Without dead ends: 1888 [2020-10-13 09:32:12,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:12,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-13 09:32:12,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2020-10-13 09:32:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-13 09:32:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2587 transitions. [2020-10-13 09:32:12,254 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2587 transitions. Word has length 98 [2020-10-13 09:32:12,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:12,255 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2587 transitions. [2020-10-13 09:32:12,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:12,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2587 transitions. [2020-10-13 09:32:12,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 09:32:12,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:12,265 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:32:12,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:32:12,268 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:12,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:12,268 INFO L82 PathProgramCache]: Analyzing trace with hash 33614273, now seen corresponding path program 1 times [2020-10-13 09:32:12,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:12,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830751887] [2020-10-13 09:32:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:12,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:12,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:12,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:32:12,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:12,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-13 09:32:12,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:32:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:32:12,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:12,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:12,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:12,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:12,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:12,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:32:12,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:12,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:12,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:12,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:12,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:12,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:12,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:12,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:32:12,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:12,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 09:32:12,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:12,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:32:12,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:12,943 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:12,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830751887] [2020-10-13 09:32:12,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:12,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:12,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890816812] [2020-10-13 09:32:12,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:12,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:12,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:12,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:12,947 INFO L87 Difference]: Start difference. First operand 1884 states and 2587 transitions. Second operand 5 states. [2020-10-13 09:32:26,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:26,433 INFO L93 Difference]: Finished difference Result 4659 states and 6588 transitions. [2020-10-13 09:32:26,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:26,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 09:32:26,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:26,451 INFO L225 Difference]: With dead ends: 4659 [2020-10-13 09:32:26,451 INFO L226 Difference]: Without dead ends: 2781 [2020-10-13 09:32:26,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:26,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2020-10-13 09:32:26,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2775. [2020-10-13 09:32:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-10-13 09:32:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3663 transitions. [2020-10-13 09:32:26,524 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3663 transitions. Word has length 101 [2020-10-13 09:32:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:26,525 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3663 transitions. [2020-10-13 09:32:26,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3663 transitions. [2020-10-13 09:32:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 09:32:26,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:26,527 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:32:26,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:32:26,528 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:26,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:26,528 INFO L82 PathProgramCache]: Analyzing trace with hash -454576961, now seen corresponding path program 1 times [2020-10-13 09:32:26,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:26,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982911057] [2020-10-13 09:32:26,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:26,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:26,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:27,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:27,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:32:27,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:32:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-10-13 09:32:27,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:32:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:32:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:27,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:27,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:27,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:27,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:27,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:27,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:32:27,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:27,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:27,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:27,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:27,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:27,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:32:27,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:32:27,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:32:27,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:27,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982911057] [2020-10-13 09:32:27,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:27,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:27,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694164778] [2020-10-13 09:32:27,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:27,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:27,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:27,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:27,964 INFO L87 Difference]: Start difference. First operand 2775 states and 3663 transitions. Second operand 5 states. [2020-10-13 09:32:41,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:41,904 INFO L93 Difference]: Finished difference Result 8201 states and 10950 transitions. [2020-10-13 09:32:41,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:41,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 09:32:41,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:41,932 INFO L225 Difference]: With dead ends: 8201 [2020-10-13 09:32:41,933 INFO L226 Difference]: Without dead ends: 5432 [2020-10-13 09:32:41,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:41,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5432 states. [2020-10-13 09:32:42,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5432 to 5407. [2020-10-13 09:32:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5407 states. [2020-10-13 09:32:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5407 states to 5407 states and 6813 transitions. [2020-10-13 09:32:42,075 INFO L78 Accepts]: Start accepts. Automaton has 5407 states and 6813 transitions. Word has length 106 [2020-10-13 09:32:42,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:42,076 INFO L479 AbstractCegarLoop]: Abstraction has 5407 states and 6813 transitions. [2020-10-13 09:32:42,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:42,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5407 states and 6813 transitions. [2020-10-13 09:32:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 09:32:42,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:42,080 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:32:42,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:32:42,081 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:42,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:42,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2095878723, now seen corresponding path program 1 times [2020-10-13 09:32:42,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:42,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132583279] [2020-10-13 09:32:42,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:42,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:42,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:43,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:43,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 09:32:43,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:32:43,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-10-13 09:32:43,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:32:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:32:43,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:43,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:43,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:43,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:43,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:43,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:43,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:32:43,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:43,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:43,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:43,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:43,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:43,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:32:43,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:43,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:32:43,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:43,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:32:43,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:43,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132583279] [2020-10-13 09:32:43,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:43,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:43,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320701925] [2020-10-13 09:32:43,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:43,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:43,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:43,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:43,304 INFO L87 Difference]: Start difference. First operand 5407 states and 6813 transitions. Second operand 5 states. [2020-10-13 09:32:55,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:55,949 INFO L93 Difference]: Finished difference Result 13025 states and 16886 transitions. [2020-10-13 09:32:55,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:55,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 09:32:55,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:55,985 INFO L225 Difference]: With dead ends: 13025 [2020-10-13 09:32:55,986 INFO L226 Difference]: Without dead ends: 7624 [2020-10-13 09:32:55,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:56,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7624 states. [2020-10-13 09:32:56,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7624 to 7616. [2020-10-13 09:32:56,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7616 states. [2020-10-13 09:32:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7616 states to 7616 states and 9335 transitions. [2020-10-13 09:32:56,142 INFO L78 Accepts]: Start accepts. Automaton has 7616 states and 9335 transitions. Word has length 124 [2020-10-13 09:32:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:56,143 INFO L479 AbstractCegarLoop]: Abstraction has 7616 states and 9335 transitions. [2020-10-13 09:32:56,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:56,143 INFO L276 IsEmpty]: Start isEmpty. Operand 7616 states and 9335 transitions. [2020-10-13 09:32:56,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 09:32:56,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:56,146 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:32:56,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:32:56,146 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:56,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:56,147 INFO L82 PathProgramCache]: Analyzing trace with hash 741633355, now seen corresponding path program 1 times [2020-10-13 09:32:56,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:56,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909541382] [2020-10-13 09:32:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:56,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:57,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:57,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:00,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:00,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 09:33:00,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:33:00,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4277 [2020-10-13 09:33:00,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 09:33:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:33:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:00,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:00,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:00,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:00,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:00,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:00,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:33:00,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:00,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:00,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:00,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:00,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:33:00,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:00,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:33:00,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:00,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 09:33:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:33:00,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909541382] [2020-10-13 09:33:00,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:00,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:00,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428174879] [2020-10-13 09:33:00,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:00,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:00,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:00,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:00,713 INFO L87 Difference]: Start difference. First operand 7616 states and 9335 transitions. Second operand 5 states. [2020-10-13 09:33:16,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:16,047 INFO L93 Difference]: Finished difference Result 19612 states and 24484 transitions. [2020-10-13 09:33:16,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:16,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 09:33:16,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:16,110 INFO L225 Difference]: With dead ends: 19612 [2020-10-13 09:33:16,110 INFO L226 Difference]: Without dead ends: 12002 [2020-10-13 09:33:16,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:16,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12002 states. [2020-10-13 09:33:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12002 to 11565. [2020-10-13 09:33:16,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11565 states. [2020-10-13 09:33:16,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11565 states to 11565 states and 13945 transitions. [2020-10-13 09:33:16,426 INFO L78 Accepts]: Start accepts. Automaton has 11565 states and 13945 transitions. Word has length 128 [2020-10-13 09:33:16,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:16,426 INFO L479 AbstractCegarLoop]: Abstraction has 11565 states and 13945 transitions. [2020-10-13 09:33:16,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:16,427 INFO L276 IsEmpty]: Start isEmpty. Operand 11565 states and 13945 transitions. [2020-10-13 09:33:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 09:33:16,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:16,429 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:33:16,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:33:16,430 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:16,430 INFO L82 PathProgramCache]: Analyzing trace with hash -281280729, now seen corresponding path program 1 times [2020-10-13 09:33:16,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:16,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340330168] [2020-10-13 09:33:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:16,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:16,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:17,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:17,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 09:33:17,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:33:17,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-10-13 09:33:17,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:17,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:17,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 09:33:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:33:17,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:33:17,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:17,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:17,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:17,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:17,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:17,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:33:17,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:17,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:17,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:17,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:17,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:17,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 09:33:17,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:17,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:33:17,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 09:33:17,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:33:17,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340330168] [2020-10-13 09:33:17,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:17,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:17,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152889939] [2020-10-13 09:33:17,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:17,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:17,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:17,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:17,611 INFO L87 Difference]: Start difference. First operand 11565 states and 13945 transitions. Second operand 5 states. [2020-10-13 09:33:34,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:34,375 INFO L93 Difference]: Finished difference Result 28376 states and 35081 transitions. [2020-10-13 09:33:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:34,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 09:33:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:34,438 INFO L225 Difference]: With dead ends: 28376 [2020-10-13 09:33:34,438 INFO L226 Difference]: Without dead ends: 16817 [2020-10-13 09:33:34,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:34,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16817 states. [2020-10-13 09:33:34,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16817 to 15076. [2020-10-13 09:33:34,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15076 states. [2020-10-13 09:33:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15076 states to 15076 states and 18870 transitions. [2020-10-13 09:33:34,817 INFO L78 Accepts]: Start accepts. Automaton has 15076 states and 18870 transitions. Word has length 129 [2020-10-13 09:33:34,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:34,817 INFO L479 AbstractCegarLoop]: Abstraction has 15076 states and 18870 transitions. [2020-10-13 09:33:34,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:34,818 INFO L276 IsEmpty]: Start isEmpty. Operand 15076 states and 18870 transitions. [2020-10-13 09:33:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 09:33:34,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:34,822 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-13 09:33:34,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:33:34,822 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:34,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:34,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2144083657, now seen corresponding path program 1 times [2020-10-13 09:33:34,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:34,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711749493] [2020-10-13 09:33:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:34,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:35,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:35,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:35,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 09:33:35,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:33:35,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-13 09:33:35,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-13 09:33:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:33:35,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:35,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:35,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:35,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:35,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:35,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:33:35,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:35,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:33:36,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:36,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:36,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:36,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:33:36,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:36,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 09:33:36,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:33:36,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:33:36,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711749493] [2020-10-13 09:33:36,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:36,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:36,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000784737] [2020-10-13 09:33:36,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:36,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:36,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:36,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:36,356 INFO L87 Difference]: Start difference. First operand 15076 states and 18870 transitions. Second operand 5 states. [2020-10-13 09:33:55,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:55,616 INFO L93 Difference]: Finished difference Result 41110 states and 52416 transitions. [2020-10-13 09:33:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:55,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-13 09:33:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:55,730 INFO L225 Difference]: With dead ends: 41110 [2020-10-13 09:33:55,731 INFO L226 Difference]: Without dead ends: 26040 [2020-10-13 09:33:55,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:55,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26040 states. [2020-10-13 09:33:56,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26040 to 25138. [2020-10-13 09:33:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25138 states. [2020-10-13 09:33:56,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25138 states to 25138 states and 31347 transitions. [2020-10-13 09:33:56,310 INFO L78 Accepts]: Start accepts. Automaton has 25138 states and 31347 transitions. Word has length 155 [2020-10-13 09:33:56,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:56,311 INFO L479 AbstractCegarLoop]: Abstraction has 25138 states and 31347 transitions. [2020-10-13 09:33:56,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:56,311 INFO L276 IsEmpty]: Start isEmpty. Operand 25138 states and 31347 transitions. [2020-10-13 09:33:56,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 09:33:56,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:56,316 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:33:56,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:33:56,317 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:56,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:56,317 INFO L82 PathProgramCache]: Analyzing trace with hash 643759726, now seen corresponding path program 1 times [2020-10-13 09:33:56,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:56,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722758565] [2020-10-13 09:33:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:56,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:56,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:56,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:57,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:57,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:57,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 09:33:57,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:33:57,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-10-13 09:33:57,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-13 09:33:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:33:57,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:58,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:58,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:58,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:58,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:58,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:58,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:33:58,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:58,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:58,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:58,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:58,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:33:58,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:58,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 09:33:58,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-13 09:33:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:33:58,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:33:58,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722758565] [2020-10-13 09:33:58,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:33:58,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:33:58,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528530186] [2020-10-13 09:33:58,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:58,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:58,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:58,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:58,350 INFO L87 Difference]: Start difference. First operand 25138 states and 31347 transitions. Second operand 5 states. [2020-10-13 09:34:18,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:18,258 INFO L93 Difference]: Finished difference Result 58597 states and 75311 transitions. [2020-10-13 09:34:18,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:18,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-13 09:34:18,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:18,417 INFO L225 Difference]: With dead ends: 58597 [2020-10-13 09:34:18,417 INFO L226 Difference]: Without dead ends: 33465 [2020-10-13 09:34:18,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:18,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33465 states. [2020-10-13 09:34:20,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33465 to 31716. [2020-10-13 09:34:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31716 states. [2020-10-13 09:34:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31716 states to 31716 states and 39305 transitions. [2020-10-13 09:34:20,328 INFO L78 Accepts]: Start accepts. Automaton has 31716 states and 39305 transitions. Word has length 171 [2020-10-13 09:34:20,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:20,329 INFO L479 AbstractCegarLoop]: Abstraction has 31716 states and 39305 transitions. [2020-10-13 09:34:20,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 31716 states and 39305 transitions. [2020-10-13 09:34:20,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 09:34:20,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:20,334 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:20,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:34:20,334 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:20,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:20,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2114559493, now seen corresponding path program 1 times [2020-10-13 09:34:20,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:20,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407404179] [2020-10-13 09:34:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:20,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:20,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:20,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:20,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:23,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:23,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 09:34:23,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:34:23,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3629 [2020-10-13 09:34:23,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:34:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:34:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:34:23,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:34:24,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:24,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:24,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:24,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:24,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:34:24,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:24,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:24,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:24,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:24,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:34:24,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:24,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:24,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:24,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:34:24,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:24,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 09:34:24,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:34:24,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:24,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 09:34:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:24,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:24,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 09:34:24,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:34:24,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-13 09:34:24,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:34:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:34:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:34:24,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:34:24,942 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-13 09:34:25,140 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-13 09:34:25,303 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-13 09:34:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:34:25,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407404179] [2020-10-13 09:34:25,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:25,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:34:25,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713065635] [2020-10-13 09:34:25,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:34:25,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:25,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:34:25,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:34:25,857 INFO L87 Difference]: Start difference. First operand 31716 states and 39305 transitions. Second operand 10 states. [2020-10-13 09:34:26,447 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-13 09:34:26,706 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-13 09:34:27,080 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-13 09:34:27,315 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-13 09:34:27,954 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-10-13 09:34:28,367 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-13 09:34:28,801 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-10-13 09:34:29,199 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-13 09:34:29,547 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-13 09:34:30,669 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2020-10-13 09:34:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:48,311 INFO L93 Difference]: Finished difference Result 64861 states and 81586 transitions. [2020-10-13 09:34:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 09:34:48,316 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 175 [2020-10-13 09:34:48,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:48,460 INFO L225 Difference]: With dead ends: 64861 [2020-10-13 09:34:48,460 INFO L226 Difference]: Without dead ends: 33029 [2020-10-13 09:34:48,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2020-10-13 09:34:48,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33029 states. [2020-10-13 09:34:49,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33029 to 31859. [2020-10-13 09:34:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31859 states. [2020-10-13 09:34:49,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31859 states to 31859 states and 39602 transitions. [2020-10-13 09:34:49,170 INFO L78 Accepts]: Start accepts. Automaton has 31859 states and 39602 transitions. Word has length 175 [2020-10-13 09:34:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:49,171 INFO L479 AbstractCegarLoop]: Abstraction has 31859 states and 39602 transitions. [2020-10-13 09:34:49,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:34:49,171 INFO L276 IsEmpty]: Start isEmpty. Operand 31859 states and 39602 transitions. [2020-10-13 09:34:49,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 09:34:49,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:49,176 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:49,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:34:49,177 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:49,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:49,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1601929071, now seen corresponding path program 1 times [2020-10-13 09:34:49,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:49,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608439509] [2020-10-13 09:34:49,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:49,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:49,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:49,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:51,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:53,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:53,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:54,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:54,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 09:34:54,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:34:54,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 09:34:54,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 09:34:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:34:54,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:54,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:54,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:54,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:54,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:54,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:54,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:34:54,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:54,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:34:54,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:54,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:54,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:34:54,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:54,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:34:54,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:54,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:34:54,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:34:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:54,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:54,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:54,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:34:54,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:54,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:34:54,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:34:54,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:34:54,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608439509] [2020-10-13 09:34:54,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:54,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:54,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75875675] [2020-10-13 09:34:54,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:54,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:54,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:54,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:54,807 INFO L87 Difference]: Start difference. First operand 31859 states and 39602 transitions. Second operand 5 states. [2020-10-13 09:35:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:10,692 INFO L93 Difference]: Finished difference Result 63748 states and 79406 transitions. [2020-10-13 09:35:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:10,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-13 09:35:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:10,797 INFO L225 Difference]: With dead ends: 63748 [2020-10-13 09:35:10,798 INFO L226 Difference]: Without dead ends: 31863 [2020-10-13 09:35:10,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:10,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31863 states. [2020-10-13 09:35:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31863 to 31859. [2020-10-13 09:35:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31859 states. [2020-10-13 09:35:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31859 states to 31859 states and 39576 transitions. [2020-10-13 09:35:11,327 INFO L78 Accepts]: Start accepts. Automaton has 31859 states and 39576 transitions. Word has length 176 [2020-10-13 09:35:11,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:11,328 INFO L479 AbstractCegarLoop]: Abstraction has 31859 states and 39576 transitions. [2020-10-13 09:35:11,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:11,328 INFO L276 IsEmpty]: Start isEmpty. Operand 31859 states and 39576 transitions. [2020-10-13 09:35:11,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 09:35:11,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:11,334 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:11,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:35:11,335 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:11,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:11,335 INFO L82 PathProgramCache]: Analyzing trace with hash 931990255, now seen corresponding path program 1 times [2020-10-13 09:35:11,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:11,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747632145] [2020-10-13 09:35:11,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:11,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:11,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:11,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:13,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:15,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:15,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 09:35:15,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:35:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4199 [2020-10-13 09:35:15,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 09:35:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:35:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:35:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:15,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:15,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:15,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:15,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:15,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:35:15,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:15,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:15,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:15,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:15,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:35:15,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:15,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:35:15,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:15,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:15,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:15,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:35:15,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:15,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:35:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:15,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:16,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:16,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:16,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 09:35:16,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:35:16,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-13 09:35:16,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 09:35:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:35:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:35:16,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:16,637 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-10-13 09:35:16,786 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-13 09:35:16,927 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-13 09:35:17,057 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-10-13 09:35:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:35:17,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747632145] [2020-10-13 09:35:17,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:17,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 09:35:17,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023526883] [2020-10-13 09:35:17,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 09:35:17,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:17,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 09:35:17,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:35:17,703 INFO L87 Difference]: Start difference. First operand 31859 states and 39576 transitions. Second operand 12 states. [2020-10-13 09:35:18,590 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-13 09:35:18,853 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-13 09:35:19,407 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-13 09:35:19,711 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-13 09:35:19,997 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-13 09:35:20,239 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-13 09:35:20,462 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-10-13 09:35:20,866 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-13 09:35:21,175 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-13 09:35:21,780 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-13 09:35:22,966 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-13 09:35:23,338 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2020-10-13 09:35:24,265 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-10-13 09:35:24,637 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-10-13 09:35:25,071 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-10-13 09:35:25,401 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48