/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem15_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:04:08,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:04:08,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:04:08,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:04:08,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:04:08,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:04:08,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:04:08,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:04:08,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:04:08,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:04:08,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:04:08,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:04:08,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:04:08,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:04:08,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:04:08,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:04:08,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:04:08,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:04:08,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:04:08,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:04:08,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:04:08,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:04:08,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:04:08,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:04:08,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:04:08,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:04:08,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:04:08,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:04:08,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:04:08,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:04:08,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:04:08,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:04:08,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:04:08,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:04:08,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:04:08,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:04:08,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:04:08,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:04:08,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:04:08,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:04:08,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:04:08,289 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 [2020-10-14 22:04:08,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:04:08,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:04:08,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:04:08,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:04:08,316 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:04:08,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:04:08,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:04:08,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:04:08,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:04:08,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:04:08,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:04:08,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:04:08,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:04:08,318 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:04:08,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:04:08,318 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:04:08,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:04:08,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:04:08,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:04:08,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:04:08,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:04:08,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:04:08,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:04:08,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:04:08,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:04:08,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:04:08,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:04:08,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:04:08,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:04:08,321 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:04:08,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:04:08,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:04:08,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:04:08,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:04:08,674 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:04:08,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2020-10-14 22:04:08,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b15018f0b/b97ff584db3740f8823ea5d4e8e8e0c7/FLAG7c138678d [2020-10-14 22:04:09,605 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:04:09,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2020-10-14 22:04:09,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b15018f0b/b97ff584db3740f8823ea5d4e8e8e0c7/FLAG7c138678d [2020-10-14 22:04:09,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b15018f0b/b97ff584db3740f8823ea5d4e8e8e0c7 [2020-10-14 22:04:09,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:04:09,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:04:09,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:04:09,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:04:09,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:04:09,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:09" (1/1) ... [2020-10-14 22:04:09,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2016f310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:09, skipping insertion in model container [2020-10-14 22:04:09,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:09" (1/1) ... [2020-10-14 22:04:09,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:04:09,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:04:10,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:04:10,916 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:04:11,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:04:11,190 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:04:11,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:11 WrapperNode [2020-10-14 22:04:11,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:04:11,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:04:11,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:04:11,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:04:11,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:11" (1/1) ... [2020-10-14 22:04:11,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:11" (1/1) ... [2020-10-14 22:04:11,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:11" (1/1) ... [2020-10-14 22:04:11,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:11" (1/1) ... [2020-10-14 22:04:11,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:11" (1/1) ... [2020-10-14 22:04:11,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:11" (1/1) ... [2020-10-14 22:04:11,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:11" (1/1) ... [2020-10-14 22:04:11,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:04:11,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:04:11,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:04:11,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:04:11,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:11" (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 [2020-10-14 22:04:11,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:04:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:04:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:04:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:04:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:04:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:04:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:04:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:04:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:04:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:04:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:04:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:04:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:04:18,188 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:04:18,189 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:04:18,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:18 BoogieIcfgContainer [2020-10-14 22:04:18,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:04:18,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:04:18,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:04:18,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:04:18,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:04:09" (1/3) ... [2020-10-14 22:04:18,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2613d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:18, skipping insertion in model container [2020-10-14 22:04:18,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:11" (2/3) ... [2020-10-14 22:04:18,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2613d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:18, skipping insertion in model container [2020-10-14 22:04:18,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:18" (3/3) ... [2020-10-14 22:04:18,206 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label45.c [2020-10-14 22:04:18,220 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:04:18,230 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:04:18,247 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:04:18,276 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:04:18,276 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:04:18,276 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:04:18,276 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:04:18,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:04:18,277 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:04:18,277 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:04:18,277 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:04:18,305 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 22:04:18,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 22:04:18,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:18,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:18,316 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:18,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:18,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1195543285, now seen corresponding path program 1 times [2020-10-14 22:04:18,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:18,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768977841] [2020-10-14 22:04:18,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:18,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:19,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:19,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 22:04:19,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:19,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-14 22:04:19,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:19,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:04:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:04:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 22:04:19,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:04:19,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:19,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:19,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:19,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:04:19,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:19,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:04:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:04:19,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768977841] [2020-10-14 22:04:19,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:04:19,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:04:19,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156511492] [2020-10-14 22:04:19,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:04:19,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:19,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:04:19,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:04:19,196 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 22:04:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:27,539 INFO L93 Difference]: Finished difference Result 1198 states and 2162 transitions. [2020-10-14 22:04:27,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:04:27,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-14 22:04:27,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:27,569 INFO L225 Difference]: With dead ends: 1198 [2020-10-14 22:04:27,570 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 22:04:27,583 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 [2020-10-14 22:04:27,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 22:04:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 688. [2020-10-14 22:04:27,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-14 22:04:27,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1008 transitions. [2020-10-14 22:04:27,705 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1008 transitions. Word has length 35 [2020-10-14 22:04:27,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:27,706 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 1008 transitions. [2020-10-14 22:04:27,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:04:27,706 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1008 transitions. [2020-10-14 22:04:27,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 22:04:27,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:27,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:27,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:04:27,719 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:27,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:27,720 INFO L82 PathProgramCache]: Analyzing trace with hash 968683602, now seen corresponding path program 1 times [2020-10-14 22:04:27,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:27,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001455572] [2020-10-14 22:04:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:27,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:27,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:29,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:29,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 22:04:29,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:04:29,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1739 [2020-10-14 22:04:29,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:29,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:29,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:04:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:04:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:04:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:04:29,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:29,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:29,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:29,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:29,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:29,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:04:29,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:29,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:29,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:29,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:29,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:04:29,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:29,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:29,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:29,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:29,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:04:29,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:29,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 22:04:29,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:29,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:29,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:04:29,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:04:29,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001455572] [2020-10-14 22:04:29,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:04:29,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:04:29,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847789393] [2020-10-14 22:04:29,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:29,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:29,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:29,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:29,982 INFO L87 Difference]: Start difference. First operand 688 states and 1008 transitions. Second operand 7 states. [2020-10-14 22:04:40,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:40,175 INFO L93 Difference]: Finished difference Result 2033 states and 2989 transitions. [2020-10-14 22:04:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:04:40,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-14 22:04:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:40,186 INFO L225 Difference]: With dead ends: 2033 [2020-10-14 22:04:40,186 INFO L226 Difference]: Without dead ends: 1351 [2020-10-14 22:04:40,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:04:40,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-10-14 22:04:40,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1331. [2020-10-14 22:04:40,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-10-14 22:04:40,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1721 transitions. [2020-10-14 22:04:40,257 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1721 transitions. Word has length 104 [2020-10-14 22:04:40,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:40,259 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1721 transitions. [2020-10-14 22:04:40,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:04:40,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1721 transitions. [2020-10-14 22:04:40,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 22:04:40,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:40,278 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:40,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:04:40,281 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:40,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:40,281 INFO L82 PathProgramCache]: Analyzing trace with hash 775879246, now seen corresponding path program 1 times [2020-10-14 22:04:40,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:40,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460127215] [2020-10-14 22:04:40,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:40,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:40,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:40,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:42,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:43,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:45,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:45,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 22:04:45,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:04:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 22:04:45,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:45,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:04:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:04:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 22:04:45,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:45,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:45,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:45,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:45,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:45,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:45,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:04:45,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:45,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:04:45,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:45,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:45,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:45,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:45,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:04:45,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:45,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 22:04:45,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:45,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:04:45,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:45,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:04:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:45,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:45,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 22:04:45,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:45,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 22:04:45,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:45,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:04:45,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 57 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:04:46,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460127215] [2020-10-14 22:04:46,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:46,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:46,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996862098] [2020-10-14 22:04:46,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:04:46,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:46,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:04:46,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:04:46,034 INFO L87 Difference]: Start difference. First operand 1331 states and 1721 transitions. Second operand 8 states. [2020-10-14 22:04:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:53,311 INFO L93 Difference]: Finished difference Result 2729 states and 3751 transitions. [2020-10-14 22:04:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:04:53,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 209 [2020-10-14 22:04:53,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:53,324 INFO L225 Difference]: With dead ends: 2729 [2020-10-14 22:04:53,325 INFO L226 Difference]: Without dead ends: 2022 [2020-10-14 22:04:53,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:04:53,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2020-10-14 22:04:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1946. [2020-10-14 22:04:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1946 states. [2020-10-14 22:04:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2405 transitions. [2020-10-14 22:04:53,384 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2405 transitions. Word has length 209 [2020-10-14 22:04:53,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:53,385 INFO L479 AbstractCegarLoop]: Abstraction has 1946 states and 2405 transitions. [2020-10-14 22:04:53,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:04:53,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2405 transitions. [2020-10-14 22:04:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-14 22:04:53,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:53,392 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:53,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:04:53,392 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:53,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:53,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1885481652, now seen corresponding path program 1 times [2020-10-14 22:04:53,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:53,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833517586] [2020-10-14 22:04:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:53,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:54,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:58,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:58,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-14 22:04:58,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:04:58,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-14 22:04:58,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:58,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:04:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:04:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 22:04:58,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:58,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:58,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:58,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:58,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:58,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:58,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:04:58,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:58,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:04:58,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:58,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:59,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:59,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:04:59,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-14 22:04:59,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:59,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:04:59,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:04:59,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 22:04:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:59,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:59,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:59,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:04:59,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:59,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 22:04:59,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:59,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 22:04:59,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:59,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:59,869 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 56 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:04:59,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833517586] [2020-10-14 22:04:59,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:59,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:59,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606073824] [2020-10-14 22:04:59,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:59,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:59,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:59,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:59,878 INFO L87 Difference]: Start difference. First operand 1946 states and 2405 transitions. Second operand 7 states. [2020-10-14 22:05:07,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:07,813 INFO L93 Difference]: Finished difference Result 3637 states and 4551 transitions. [2020-10-14 22:05:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:05:07,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 315 [2020-10-14 22:05:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:07,831 INFO L225 Difference]: With dead ends: 3637 [2020-10-14 22:05:07,831 INFO L226 Difference]: Without dead ends: 2004 [2020-10-14 22:05:07,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:05:07,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-10-14 22:05:07,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1948. [2020-10-14 22:05:07,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-10-14 22:05:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2402 transitions. [2020-10-14 22:05:07,901 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2402 transitions. Word has length 315 [2020-10-14 22:05:07,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:07,903 INFO L479 AbstractCegarLoop]: Abstraction has 1948 states and 2402 transitions. [2020-10-14 22:05:07,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:05:07,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2402 transitions. [2020-10-14 22:05:07,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-14 22:05:07,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:07,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:07,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:05:07,910 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:07,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:07,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1631175273, now seen corresponding path program 1 times [2020-10-14 22:05:07,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:07,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679025140] [2020-10-14 22:05:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:08,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:08,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:08,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:08,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:11,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:11,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:11,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-14 22:05:11,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:05:11,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3392 [2020-10-14 22:05:11,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:11,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:11,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 22:05:11,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:05:11,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 336 [2020-10-14 22:05:11,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:11,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:11,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:11,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:11,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:11,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:11,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:05:11,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:11,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:11,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:11,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:11,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:05:11,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:11,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:11,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:11,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:11,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:05:11,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:11,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 22:05:11,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:11,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:11,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:11,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:05:11,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:11,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:05:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:11,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:12,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:12,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:12,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:05:12,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:05:12,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 911 [2020-10-14 22:05:12,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:12,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:12,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 22:05:12,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 24 proven. 123 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:05:13,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679025140] [2020-10-14 22:05:13,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:13,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:05:13,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348618626] [2020-10-14 22:05:13,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:05:13,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:13,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:05:13,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:05:13,143 INFO L87 Difference]: Start difference. First operand 1948 states and 2402 transitions. Second operand 8 states. [2020-10-14 22:05:27,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:27,678 INFO L93 Difference]: Finished difference Result 5793 states and 7445 transitions. [2020-10-14 22:05:27,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 22:05:27,679 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-10-14 22:05:27,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:27,715 INFO L225 Difference]: With dead ends: 5793 [2020-10-14 22:05:27,715 INFO L226 Difference]: Without dead ends: 5096 [2020-10-14 22:05:27,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-14 22:05:27,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5096 states. [2020-10-14 22:05:27,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5096 to 3836. [2020-10-14 22:05:27,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3836 states. [2020-10-14 22:05:27,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 4684 transitions. [2020-10-14 22:05:27,863 INFO L78 Accepts]: Start accepts. Automaton has 3836 states and 4684 transitions. Word has length 330 [2020-10-14 22:05:27,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:27,864 INFO L479 AbstractCegarLoop]: Abstraction has 3836 states and 4684 transitions. [2020-10-14 22:05:27,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:05:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3836 states and 4684 transitions. [2020-10-14 22:05:27,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-14 22:05:27,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:27,872 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:27,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:05:27,873 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:27,873 INFO L82 PathProgramCache]: Analyzing trace with hash -812227236, now seen corresponding path program 1 times [2020-10-14 22:05:27,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:27,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487545694] [2020-10-14 22:05:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:28,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:28,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:29,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:29,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:29,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-14 22:05:29,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:05:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2008 [2020-10-14 22:05:29,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:29,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:05:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 22:05:29,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:30,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:30,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:30,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:30,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:30,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:30,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:05:30,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:30,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:30,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:30,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:30,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:30,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:30,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:05:30,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:30,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 22:05:30,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:30,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:30,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:30,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:30,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:05:30,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:30,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:05:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:30,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:30,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:30,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:05:30,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:30,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 22:05:30,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:30,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:30,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:30,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:30,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:05:30,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:30,769 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:05:30,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487545694] [2020-10-14 22:05:30,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:30,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:05:30,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921175328] [2020-10-14 22:05:30,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:05:30,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:30,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:05:30,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:05:30,771 INFO L87 Difference]: Start difference. First operand 3836 states and 4684 transitions. Second operand 7 states. [2020-10-14 22:05:42,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:42,523 INFO L93 Difference]: Finished difference Result 8715 states and 11174 transitions. [2020-10-14 22:05:42,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:05:42,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 405 [2020-10-14 22:05:42,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:42,554 INFO L225 Difference]: With dead ends: 8715 [2020-10-14 22:05:42,554 INFO L226 Difference]: Without dead ends: 5501 [2020-10-14 22:05:42,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:05:42,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2020-10-14 22:05:42,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 5450. [2020-10-14 22:05:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5450 states. [2020-10-14 22:05:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 6641 transitions. [2020-10-14 22:05:42,703 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 6641 transitions. Word has length 405 [2020-10-14 22:05:42,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:42,704 INFO L479 AbstractCegarLoop]: Abstraction has 5450 states and 6641 transitions. [2020-10-14 22:05:42,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:05:42,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 6641 transitions. [2020-10-14 22:05:42,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-10-14 22:05:42,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:42,713 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:42,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:05:42,713 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:42,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:42,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1402886482, now seen corresponding path program 1 times [2020-10-14 22:05:42,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:42,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763924598] [2020-10-14 22:05:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:42,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:43,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:43,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:44,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:44,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:47,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:47,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-14 22:05:47,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:05:47,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 22:05:47,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:47,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:05:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 22:05:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 22:05:47,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:47,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:47,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:47,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:47,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:47,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:47,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:05:47,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:47,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:47,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:47,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:47,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:47,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:47,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:47,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:47,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:47,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:05:47,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:47,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:05:47,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:47,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:05:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:48,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:05:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:48,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:48,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:48,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:48,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:05:48,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:05:48,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 726 [2020-10-14 22:05:48,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:48,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:05:48,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:48,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 22:05:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:48,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:49,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:49,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:05:49,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:49,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 22:05:49,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:49,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:49,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:49,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:49,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:05:49,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:49,240 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 268 proven. 93 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 22:05:49,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763924598] [2020-10-14 22:05:49,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:49,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:05:49,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297201430] [2020-10-14 22:05:49,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:05:49,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:49,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:05:49,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:05:49,247 INFO L87 Difference]: Start difference. First operand 5450 states and 6641 transitions. Second operand 8 states. [2020-10-14 22:06:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:01,991 INFO L93 Difference]: Finished difference Result 11966 states and 15133 transitions. [2020-10-14 22:06:01,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:06:01,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 426 [2020-10-14 22:06:01,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:02,029 INFO L225 Difference]: With dead ends: 11966 [2020-10-14 22:06:02,029 INFO L226 Difference]: Without dead ends: 6498 [2020-10-14 22:06:02,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:06:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2020-10-14 22:06:02,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 6433. [2020-10-14 22:06:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6433 states. [2020-10-14 22:06:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6433 states to 6433 states and 7559 transitions. [2020-10-14 22:06:02,209 INFO L78 Accepts]: Start accepts. Automaton has 6433 states and 7559 transitions. Word has length 426 [2020-10-14 22:06:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:02,210 INFO L479 AbstractCegarLoop]: Abstraction has 6433 states and 7559 transitions. [2020-10-14 22:06:02,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:06:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 6433 states and 7559 transitions. [2020-10-14 22:06:02,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2020-10-14 22:06:02,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:02,232 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:02,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:06:02,233 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:02,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:02,233 INFO L82 PathProgramCache]: Analyzing trace with hash 606212906, now seen corresponding path program 1 times [2020-10-14 22:06:02,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:02,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881108148] [2020-10-14 22:06:02,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:02,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:03,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:04,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:07,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:07,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:07,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-14 22:06:07,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:06:07,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-14 22:06:07,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:07,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:07,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:07,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:06:07,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 22:06:07,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:07,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:07,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:07,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:07,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:07,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:06:07,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:07,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:07,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:07,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:07,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:07,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:07,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:07,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:07,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:07,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:06:07,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:07,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 22:06:07,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:07,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:07,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:07,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:07,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:06:07,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:07,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:06:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:07,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:07,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:07,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:06:07,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:07,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 22:06:07,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:07,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:07,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:07,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:06:07,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:08,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:06:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:08,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:08,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:08,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:06:08,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:08,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 22:06:08,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:08,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 22:06:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:08,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 196 proven. 95 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-14 22:06:08,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881108148] [2020-10-14 22:06:08,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:08,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:06:08,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776381293] [2020-10-14 22:06:08,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:08,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:08,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:08,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:08,463 INFO L87 Difference]: Start difference. First operand 6433 states and 7559 transitions. Second operand 7 states. [2020-10-14 22:06:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:20,481 INFO L93 Difference]: Finished difference Result 14480 states and 17048 transitions. [2020-10-14 22:06:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:06:20,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 516 [2020-10-14 22:06:20,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:20,529 INFO L225 Difference]: With dead ends: 14480 [2020-10-14 22:06:20,529 INFO L226 Difference]: Without dead ends: 8669 [2020-10-14 22:06:20,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:06:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8669 states. [2020-10-14 22:06:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8669 to 8311. [2020-10-14 22:06:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8311 states. [2020-10-14 22:06:20,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8311 states to 8311 states and 9587 transitions. [2020-10-14 22:06:20,859 INFO L78 Accepts]: Start accepts. Automaton has 8311 states and 9587 transitions. Word has length 516 [2020-10-14 22:06:20,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:20,860 INFO L479 AbstractCegarLoop]: Abstraction has 8311 states and 9587 transitions. [2020-10-14 22:06:20,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 8311 states and 9587 transitions. [2020-10-14 22:06:20,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2020-10-14 22:06:20,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:20,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:20,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:06:20,875 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:20,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:20,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1810601998, now seen corresponding path program 1 times [2020-10-14 22:06:20,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:20,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312066601] [2020-10-14 22:06:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:21,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:22,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:24,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:24,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 542 [2020-10-14 22:06:24,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:06:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3170 [2020-10-14 22:06:24,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:24,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:06:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:06:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 22:06:24,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:24,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:24,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:24,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:24,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:24,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:24,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:06:24,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:24,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:24,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:24,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:24,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:24,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:24,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:24,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:06:24,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 22:06:24,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:24,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:24,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:06:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:24,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:24,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:24,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:06:24,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:24,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 22:06:24,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:24,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:24,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:24,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:06:24,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:06:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:24,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:24,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:06:24,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:06:24,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 22:06:24,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:24,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:24,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:24,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:24,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:06:24,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 244 proven. 29 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 22:06:25,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312066601] [2020-10-14 22:06:25,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:25,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:06:25,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681236588] [2020-10-14 22:06:25,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:25,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:25,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:25,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:25,024 INFO L87 Difference]: Start difference. First operand 8311 states and 9587 transitions. Second operand 7 states. [2020-10-14 22:06:36,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:36,527 INFO L93 Difference]: Finished difference Result 16525 states and 20382 transitions. [2020-10-14 22:06:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:06:36,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 528 [2020-10-14 22:06:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:36,595 INFO L225 Difference]: With dead ends: 16525 [2020-10-14 22:06:36,595 INFO L226 Difference]: Without dead ends: 11328 [2020-10-14 22:06:36,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:06:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11328 states. [2020-10-14 22:06:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11328 to 11239. [2020-10-14 22:06:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11239 states. [2020-10-14 22:06:36,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11239 states to 11239 states and 13289 transitions. [2020-10-14 22:06:36,955 INFO L78 Accepts]: Start accepts. Automaton has 11239 states and 13289 transitions. Word has length 528 [2020-10-14 22:06:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:36,957 INFO L479 AbstractCegarLoop]: Abstraction has 11239 states and 13289 transitions. [2020-10-14 22:06:36,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 11239 states and 13289 transitions. [2020-10-14 22:06:36,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-10-14 22:06:36,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:36,972 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:36,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:06:36,973 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:36,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:36,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1605639450, now seen corresponding path program 1 times [2020-10-14 22:06:36,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:36,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091949337] [2020-10-14 22:06:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:37,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:37,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:38,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:38,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-14 22:06:38,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:06:38,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1824 [2020-10-14 22:06:38,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:38,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:38,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:38,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:06:38,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 22:06:38,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:39,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:39,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:39,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:39,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:39,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:39,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:06:39,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:39,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:39,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:39,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:39,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:39,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:39,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:39,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:06:39,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:39,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:06:39,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:39,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:39,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:39,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:06:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:39,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:39,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:06:39,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:39,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 22:06:39,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:39,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:06:39,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:39,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:06:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:39,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:39,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 22:06:39,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:39,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 22:06:39,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:39,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:39,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:39,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 22:06:39,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:06:39,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091949337] [2020-10-14 22:06:39,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:39,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:06:39,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821016461] [2020-10-14 22:06:39,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:39,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:39,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:39,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:39,719 INFO L87 Difference]: Start difference. First operand 11239 states and 13289 transitions. Second operand 7 states. [2020-10-14 22:06:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:51,639 INFO L93 Difference]: Finished difference Result 24769 states and 30361 transitions. [2020-10-14 22:06:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:06:51,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 538 [2020-10-14 22:06:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:51,699 INFO L225 Difference]: With dead ends: 24769 [2020-10-14 22:06:51,699 INFO L226 Difference]: Without dead ends: 14152 [2020-10-14 22:06:51,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:06:51,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14152 states. [2020-10-14 22:06:52,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14152 to 13796. [2020-10-14 22:06:52,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13796 states. [2020-10-14 22:06:52,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13796 states to 13796 states and 16295 transitions. [2020-10-14 22:06:52,034 INFO L78 Accepts]: Start accepts. Automaton has 13796 states and 16295 transitions. Word has length 538 [2020-10-14 22:06:52,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:52,035 INFO L479 AbstractCegarLoop]: Abstraction has 13796 states and 16295 transitions. [2020-10-14 22:06:52,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 13796 states and 16295 transitions. [2020-10-14 22:06:52,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-10-14 22:06:52,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:52,043 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:52,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:06:52,044 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:52,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:52,044 INFO L82 PathProgramCache]: Analyzing trace with hash 521490574, now seen corresponding path program 1 times [2020-10-14 22:06:52,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:52,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058564242] [2020-10-14 22:06:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:52,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:52,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:53,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:54,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:54,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 574 [2020-10-14 22:06:54,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:06:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2181 [2020-10-14 22:06:54,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:54,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:06:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 22:06:54,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:54,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:54,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:54,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:54,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:54,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:54,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:06:54,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:54,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:54,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:54,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:54,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:54,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:54,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:06:54,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:54,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 22:06:54,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:54,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:54,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:54,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:54,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:06:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:54,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:54,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:54,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:06:54,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:54,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 22:06:54,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:54,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:06:54,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:54,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:06:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:54,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:55,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:55,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 22:06:55,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:55,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 22:06:55,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:55,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:55,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 22:06:55,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:06:55,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058564242] [2020-10-14 22:06:55,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:55,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:06:55,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552861280] [2020-10-14 22:06:55,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:55,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:55,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:55,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:55,235 INFO L87 Difference]: Start difference. First operand 13796 states and 16295 transitions. Second operand 7 states. [2020-10-14 22:07:08,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:08,086 INFO L93 Difference]: Finished difference Result 29121 states and 35503 transitions. [2020-10-14 22:07:08,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:07:08,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 560 [2020-10-14 22:07:08,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:08,147 INFO L225 Difference]: With dead ends: 29121 [2020-10-14 22:07:08,148 INFO L226 Difference]: Without dead ends: 18746 [2020-10-14 22:07:08,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:07:08,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18746 states. [2020-10-14 22:07:08,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18746 to 17512. [2020-10-14 22:07:08,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17512 states. [2020-10-14 22:07:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17512 states to 17512 states and 20818 transitions. [2020-10-14 22:07:08,566 INFO L78 Accepts]: Start accepts. Automaton has 17512 states and 20818 transitions. Word has length 560 [2020-10-14 22:07:08,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:07:08,568 INFO L479 AbstractCegarLoop]: Abstraction has 17512 states and 20818 transitions. [2020-10-14 22:07:08,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:07:08,568 INFO L276 IsEmpty]: Start isEmpty. Operand 17512 states and 20818 transitions. [2020-10-14 22:07:08,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2020-10-14 22:07:08,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:07:08,592 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:07:08,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:07:08,593 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:07:08,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:07:08,593 INFO L82 PathProgramCache]: Analyzing trace with hash 427594569, now seen corresponding path program 1 times [2020-10-14 22:07:08,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:07:08,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444647386] [2020-10-14 22:07:08,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:07:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:08,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:09,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:12,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:13,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:13,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 698 [2020-10-14 22:07:13,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:07:13,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 22:07:13,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:13,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:07:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 22:07:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 22:07:13,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:13,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:07:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:13,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:13,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:13,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:07:13,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:07:13,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:13,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:13,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:13,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:07:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:14,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:14,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:14,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:07:14,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:14,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 22:07:14,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:14,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 22:07:14,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:14,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:07:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:14,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:14,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:07:14,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:14,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 22:07:14,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:14,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:07:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:07:14,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:14,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:07:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:14,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:14,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:14,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 22:07:14,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:14,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 22:07:14,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:14,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:14,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:14,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:14,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 22:07:14,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:14,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-14 22:07:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:14,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:14,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:14,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 22:07:14,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:14,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:07:14,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:14,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 22:07:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:14,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 482 proven. 200 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-14 22:07:15,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444647386] [2020-10-14 22:07:15,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:07:15,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:07:15,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863947093] [2020-10-14 22:07:15,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:07:15,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:07:15,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:07:15,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:07:15,257 INFO L87 Difference]: Start difference. First operand 17512 states and 20818 transitions. Second operand 10 states. [2020-10-14 22:07:33,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:33,243 INFO L93 Difference]: Finished difference Result 44403 states and 53832 transitions. [2020-10-14 22:07:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 22:07:33,245 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 682 [2020-10-14 22:07:33,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:33,323 INFO L225 Difference]: With dead ends: 44403 [2020-10-14 22:07:33,324 INFO L226 Difference]: Without dead ends: 27513 [2020-10-14 22:07:33,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2020-10-14 22:07:33,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27513 states. [2020-10-14 22:07:33,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27513 to 26863. [2020-10-14 22:07:33,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26863 states. [2020-10-14 22:07:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26863 states to 26863 states and 31624 transitions. [2020-10-14 22:07:33,843 INFO L78 Accepts]: Start accepts. Automaton has 26863 states and 31624 transitions. Word has length 682 [2020-10-14 22:07:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:07:33,844 INFO L479 AbstractCegarLoop]: Abstraction has 26863 states and 31624 transitions. [2020-10-14 22:07:33,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:07:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 26863 states and 31624 transitions. [2020-10-14 22:07:33,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2020-10-14 22:07:33,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:07:33,869 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:07:33,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:07:33,869 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:07:33,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:07:33,870 INFO L82 PathProgramCache]: Analyzing trace with hash -108675356, now seen corresponding path program 1 times [2020-10-14 22:07:33,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:07:33,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666937661] [2020-10-14 22:07:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:07:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:34,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:37,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:39,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:39,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 733 [2020-10-14 22:07:39,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:07:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-14 22:07:39,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:39,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:39,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:07:39,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 573 [2020-10-14 22:07:39,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 22:07:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:39,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:07:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:39,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:39,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:39,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:07:39,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:39,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:07:39,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:39,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:39,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:39,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:39,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:39,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:39,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:07:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:39,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:39,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:39,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:07:39,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:39,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 22:07:39,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:39,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:39,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:39,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:39,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:39,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:39,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:07:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:39,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:39,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 22:07:39,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:39,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 22:07:39,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:39,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:39,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 22:07:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:39,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:39,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:39,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:07:39,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:39,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 22:07:39,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:39,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:07:39,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:39,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-14 22:07:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:39,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:39,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:39,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 22:07:39,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 22:07:39,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:39,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 22:07:39,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 403 proven. 30 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-14 22:07:40,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666937661] [2020-10-14 22:07:40,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:07:40,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:07:40,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048399843] [2020-10-14 22:07:40,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:07:40,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:07:40,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:07:40,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:07:40,144 INFO L87 Difference]: Start difference. First operand 26863 states and 31624 transitions. Second operand 6 states. [2020-10-14 22:07:58,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:58,621 INFO L93 Difference]: Finished difference Result 57247 states and 69002 transitions. [2020-10-14 22:07:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:07:58,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 717 [2020-10-14 22:07:58,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:58,756 INFO L225 Difference]: With dead ends: 57247 [2020-10-14 22:07:58,756 INFO L226 Difference]: Without dead ends: 35350 [2020-10-14 22:07:58,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56