/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:27:29,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:27:29,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:27:29,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:27:29,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:27:29,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:27:29,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:27:29,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:27:29,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:27:29,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:27:29,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:27:29,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:27:29,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:27:29,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:27:29,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:27:29,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:27:29,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:27:29,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:27:29,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:27:29,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:27:29,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:27:29,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:27:29,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:27:29,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:27:29,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:27:29,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:27:29,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:27:29,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:27:29,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:27:29,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:27:29,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:27:29,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:27:29,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:27:29,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:27:29,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:27:29,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:27:29,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:27:29,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:27:29,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:27:29,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:27:29,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:27:29,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:27:29,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:27:29,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:27:29,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:27:29,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:27:29,342 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:27:29,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:27:29,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:27:29,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:27:29,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:27:29,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:27:29,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:27:29,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:27:29,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:27:29,347 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:27:29,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:27:29,347 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:27:29,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:27:29,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:27:29,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:27:29,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:27:29,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:27:29,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:27:29,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:27:29,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:27:29,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:27:29,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:27:29,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:27:29,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:27:29,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:27:29,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:27:29,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:27:29,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:27:29,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:27:29,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:27:29,807 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:27:29,809 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-25 05:27:29,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94b0df0bd/0de28ca28ebc4bde9efbd20beafdd60b/FLAGfb1d2308d [2020-09-25 05:27:30,462 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:27:30,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-25 05:27:30,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94b0df0bd/0de28ca28ebc4bde9efbd20beafdd60b/FLAGfb1d2308d [2020-09-25 05:27:30,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94b0df0bd/0de28ca28ebc4bde9efbd20beafdd60b [2020-09-25 05:27:30,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:27:30,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:27:30,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:27:30,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:27:30,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:27:30,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:27:30" (1/1) ... [2020-09-25 05:27:30,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1585d1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:30, skipping insertion in model container [2020-09-25 05:27:30,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:27:30" (1/1) ... [2020-09-25 05:27:30,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:27:30,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:27:31,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:27:31,105 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:27:31,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:27:31,145 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:27:31,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:31 WrapperNode [2020-09-25 05:27:31,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:27:31,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:27:31,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:27:31,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:27:31,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:31" (1/1) ... [2020-09-25 05:27:31,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:31" (1/1) ... [2020-09-25 05:27:31,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:31" (1/1) ... [2020-09-25 05:27:31,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:31" (1/1) ... [2020-09-25 05:27:31,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:31" (1/1) ... [2020-09-25 05:27:31,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:31" (1/1) ... [2020-09-25 05:27:31,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:31" (1/1) ... [2020-09-25 05:27:31,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:27:31,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:27:31,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:27:31,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:27:31,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:27:31,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:27:31,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:27:31,348 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 05:27:31,349 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 05:27:31,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:27:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:27:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:27:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 05:27:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 05:27:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:27:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:27:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:27:31,593 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:27:31,594 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:27:31,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:27:31 BoogieIcfgContainer [2020-09-25 05:27:31,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:27:31,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:27:31,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:27:31,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:27:31,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:27:30" (1/3) ... [2020-09-25 05:27:31,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d804a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:27:31, skipping insertion in model container [2020-09-25 05:27:31,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:31" (2/3) ... [2020-09-25 05:27:31,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d804a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:27:31, skipping insertion in model container [2020-09-25 05:27:31,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:27:31" (3/3) ... [2020-09-25 05:27:31,607 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2020-09-25 05:27:31,616 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:27:31,624 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:27:31,644 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:27:31,674 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:27:31,674 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:27:31,674 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:27:31,675 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:27:31,675 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:27:31,675 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:27:31,675 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:27:31,675 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:27:31,695 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 05:27:31,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 05:27:31,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:31,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:31,704 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:31,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:31,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 05:27:31,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:31,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807142453] [2020-09-25 05:27:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:31,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:32,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:32,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:27:32,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:32,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-25 05:27:32,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:32,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:27:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:32,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:27:32,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:32,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:32,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:32,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:32,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:32,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:32,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:32,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:32,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:32,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:32,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:32,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:32,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:32,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:32,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:27:32,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:32,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:27:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:27:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:27:32,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807142453] [2020-09-25 05:27:32,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:27:32,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:27:32,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806404176] [2020-09-25 05:27:32,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:27:32,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:32,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:27:32,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:27:32,248 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 05:27:32,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:32,377 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 05:27:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:27:32,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 05:27:32,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:32,395 INFO L225 Difference]: With dead ends: 58 [2020-09-25 05:27:32,396 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 05:27:32,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:27:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 05:27:32,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 05:27:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 05:27:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 05:27:32,463 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 05:27:32,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:32,463 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 05:27:32,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:27:32,464 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 05:27:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 05:27:32,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:32,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:32,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:27:32,467 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:32,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:32,468 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 05:27:32,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:32,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207610154] [2020-09-25 05:27:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:32,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:32,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:32,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:32,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:27:32,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:32,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 05:27:32,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:32,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:32,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:32,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:32,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:32,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:32,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:27:32,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:32,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:32,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:32,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:32,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:32,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:32,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:32,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:32,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 05:27:32,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:32,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:32,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:32,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:32,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:27:32,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207610154] [2020-09-25 05:27:32,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:27:32,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:27:32,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790688136] [2020-09-25 05:27:32,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:27:32,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:32,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:27:32,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:27:32,767 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 05:27:32,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:32,847 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 05:27:32,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:27:32,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 05:27:32,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:32,850 INFO L225 Difference]: With dead ends: 50 [2020-09-25 05:27:32,850 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 05:27:32,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:27:32,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 05:27:32,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 05:27:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 05:27:32,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 05:27:32,863 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 05:27:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:32,863 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 05:27:32,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:27:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 05:27:32,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 05:27:32,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:32,866 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:27:32,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:27:32,867 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:32,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:32,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 05:27:32,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:32,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801590300] [2020-09-25 05:27:32,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:32,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:32,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:33,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:34,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:34,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 05:27:34,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:27:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1937 [2020-09-25 05:27:34,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:34,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:34,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:34,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:34,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:27:34,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:34,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:34,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:34,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:34,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:27:34,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:34,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:34,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:34,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:34,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:34,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:35,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:35,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:35,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:27:35,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 05:27:35,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:35,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:35,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:27:35,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:35,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:35,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:35,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:35,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:35,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:27:35,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:35,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:27:35,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:35,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:35,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:35,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:35,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:35,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:27:35,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:35,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:35,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:35,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:35,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:27:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:27:35,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801590300] [2020-09-25 05:27:35,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:27:35,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:27:35,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078074685] [2020-09-25 05:27:35,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:27:35,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:35,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:27:35,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:35,227 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 05:27:35,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:35,446 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 05:27:35,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:27:35,448 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 05:27:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:35,450 INFO L225 Difference]: With dead ends: 58 [2020-09-25 05:27:35,451 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 05:27:35,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:35,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 05:27:35,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 05:27:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 05:27:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 05:27:35,477 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 05:27:35,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:35,480 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 05:27:35,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:27:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 05:27:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 05:27:35,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:35,485 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:27:35,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:27:35,485 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:35,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:35,487 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 05:27:35,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:35,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019288949] [2020-09-25 05:27:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:35,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:35,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:35,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:35,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:35,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:37,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:37,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 05:27:37,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:27:37,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1707 [2020-09-25 05:27:37,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:37,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:27:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 05:27:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:27:37,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:37,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:37,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:37,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:37,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:37,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:37,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:37,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:37,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:37,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:37,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:37,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:37,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:37,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:37,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:37,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:27:37,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:27:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-09-25 05:27:37,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:37,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:27:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:27:37,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:37,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:37,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:37,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:37,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:37,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:27:37,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:37,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:27:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:37,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:37,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:37,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:37,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:37,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:37,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:37,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:27:37,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:37,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:37,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:37,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:27:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 05:27:37,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019288949] [2020-09-25 05:27:37,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:37,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:27:37,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436435357] [2020-09-25 05:27:37,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:27:37,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:37,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:27:37,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:37,881 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 05:27:38,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:38,047 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2020-09-25 05:27:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:27:38,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 05:27:38,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:38,056 INFO L225 Difference]: With dead ends: 75 [2020-09-25 05:27:38,056 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 05:27:38,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:27:38,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 05:27:38,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2020-09-25 05:27:38,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:27:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 05:27:38,089 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 35 [2020-09-25 05:27:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:38,089 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 05:27:38,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:27:38,090 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 05:27:38,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 05:27:38,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:38,098 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:27:38,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:27:38,099 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:38,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:38,102 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 05:27:38,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:38,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013762405] [2020-09-25 05:27:38,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:38,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 05:27:43,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:27:43,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:27:43,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:27:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:27:43,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:43,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:43,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:43,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:27:43,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-09-25 05:27:43,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:43,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:27:43,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:27:43,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:43,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:43,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:27:43,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:43,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:43,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:27:43,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:43,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:43,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 05:27:43,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:43,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:27:43,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:43,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:43,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:27:43,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:43,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:27:43,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:43,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:43,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:27:43,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:43,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:43,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 05:27:43,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013762405] [2020-09-25 05:27:43,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:43,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:27:43,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967818080] [2020-09-25 05:27:43,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:27:43,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:43,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:27:43,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:43,713 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 7 states. [2020-09-25 05:27:43,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:43,887 INFO L93 Difference]: Finished difference Result 111 states and 150 transitions. [2020-09-25 05:27:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:27:43,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 05:27:43,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:43,893 INFO L225 Difference]: With dead ends: 111 [2020-09-25 05:27:43,902 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 05:27:43,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:27:43,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 05:27:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 05:27:43,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:27:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 05:27:43,917 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2020-09-25 05:27:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:43,917 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 05:27:43,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:27:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 05:27:43,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 05:27:43,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:43,920 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:27:43,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:27:43,920 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:43,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:43,921 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 2 times [2020-09-25 05:27:43,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:43,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217980002] [2020-09-25 05:27:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:47,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:48,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 05:27:48,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:27:48,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:27:48,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:48,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:48,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:48,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:48,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:27:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:48,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:48,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:48,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:48,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:48,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:48,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:48,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:48,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:48,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:48,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:51,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:51,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:27:51,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:27:51,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2884 [2020-09-25 05:27:51,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:51,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:51,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:51,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:51,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:27:51,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:51,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:51,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:51,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:51,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:51,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:51,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 05:27:51,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:51,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:51,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:51,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:51,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:27:51,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:51,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:51,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:51,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:51,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:51,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:51,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:51,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:51,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:51,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:51,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:51,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:51,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:51,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:51,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:51,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:51,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:51,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:51,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:51,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:51,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:51,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:51,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:51,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:51,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:51,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:27:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:51,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:52,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:52,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:52,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:27:52,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:52,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:52,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:27:52,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 05:27:52,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217980002] [2020-09-25 05:27:52,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:52,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:27:52,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858887850] [2020-09-25 05:27:52,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:27:52,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:52,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:27:52,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:52,034 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 7 states. [2020-09-25 05:27:52,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:52,155 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-09-25 05:27:52,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:27:52,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 05:27:52,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:52,158 INFO L225 Difference]: With dead ends: 66 [2020-09-25 05:27:52,158 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 05:27:52,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:52,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 05:27:52,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 05:27:52,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:27:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 05:27:52,168 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2020-09-25 05:27:52,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:52,169 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 05:27:52,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:27:52,169 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 05:27:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 05:27:52,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:52,171 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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] [2020-09-25 05:27:52,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:27:52,171 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:52,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:52,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 05:27:52,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:52,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119670121] [2020-09-25 05:27:52,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:52,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:57,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 05:27:57,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:27:57,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:27:57,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:57,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:57,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:57,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:27:57,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:57,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:57,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:57,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:57,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:57,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:57,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:57,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:57,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:57,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:57,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:57,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:57,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:57,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:00,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:02,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 05:28:02,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:28:02,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:28:02,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:02,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:28:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:02,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:02,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:02,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:28:02,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:02,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 05:28:02,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:02,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:28:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:02,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:02,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:02,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:02,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:02,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:02,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:28:02,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:02,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:02,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:28:02,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:28:02,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:02,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:02,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:28:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:02,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:02,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:02,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:28:02,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:02,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:28:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:02,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:02,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:28:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:02,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:02,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:28:02,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:28:02,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 05:28:02,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:02,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 05:28:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:02,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:02,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:02,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:02,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:28:02,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:02,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:02,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:02,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:28:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:02,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:02,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:02,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:02,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:02,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:02,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:02,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 05:28:02,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119670121] [2020-09-25 05:28:02,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:28:02,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:28:02,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110281234] [2020-09-25 05:28:02,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:28:02,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:02,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:28:02,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:28:02,401 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 6 states. [2020-09-25 05:28:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:02,486 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2020-09-25 05:28:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:28:02,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 05:28:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:02,488 INFO L225 Difference]: With dead ends: 104 [2020-09-25 05:28:02,488 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 05:28:02,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:28:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 05:28:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-25 05:28:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 05:28:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-09-25 05:28:02,504 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 67 [2020-09-25 05:28:02,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:02,507 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-09-25 05:28:02,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:28:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-09-25 05:28:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 05:28:02,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:02,508 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-09-25 05:28:02,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:28:02,509 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:02,511 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 05:28:02,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:02,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78648497] [2020-09-25 05:28:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:07,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:07,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 05:28:07,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:28:07,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:28:07,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:07,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:28:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:28:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:28:07,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:28:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:07,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:07,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:07,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:28:07,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:07,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:28:07,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:07,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:07,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:28:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:07,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:07,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:07,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:07,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:12,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:12,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 05:28:12,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:28:12,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:28:12,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:12,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:28:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:28:12,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:28:12,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:12,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:12,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:12,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:12,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:12,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:28:12,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:28:12,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 05:28:12,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:12,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:28:12,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:12,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:28:12,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:12,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:12,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:12,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:12,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:12,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:12,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:28:12,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:12,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:28:12,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:12,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:28:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:12,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:12,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:12,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:12,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:12,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:28:12,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:12,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:12,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:12,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:12,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:28:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:12,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:12,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:12,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:13,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:28:13,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:28:13,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 05:28:13,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:13,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:13,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:28:13,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:28:13,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:28:13,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:13,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:13,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:13,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:13,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:28:13,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:28:13,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:13,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:28:13,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:13,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:28:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:13,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:13,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:13,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:13,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:28:13,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:13,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:13,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 25 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 05:28:13,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78648497] [2020-09-25 05:28:13,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:28:13,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:28:13,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006540208] [2020-09-25 05:28:13,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:28:13,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:13,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:28:13,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:28:13,155 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 11 states. [2020-09-25 05:28:13,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:13,487 INFO L93 Difference]: Finished difference Result 128 states and 176 transitions. [2020-09-25 05:28:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:28:13,488 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-09-25 05:28:13,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:13,489 INFO L225 Difference]: With dead ends: 128 [2020-09-25 05:28:13,490 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 05:28:13,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:28:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 05:28:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-09-25 05:28:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 05:28:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2020-09-25 05:28:13,514 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 69 [2020-09-25 05:28:13,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:13,515 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2020-09-25 05:28:13,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:28:13,515 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2020-09-25 05:28:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 05:28:13,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:13,516 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:28:13,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:28:13,521 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:13,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:13,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1523115787, now seen corresponding path program 1 times [2020-09-25 05:28:13,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:13,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445401818] [2020-09-25 05:28:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:13,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:18,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 05:28:18,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:28:18,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:28:18,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:18,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:18,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:18,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 05:28:18,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:18,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:18,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:28:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:18,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:18,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:28:18,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:18,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:28:18,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:18,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:18,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:18,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:28:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:18,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:20,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:21,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:21,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:23,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:23,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 05:28:23,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:28:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:28:23,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:23,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:28:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:23,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:23,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:23,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:23,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:23,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:24,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 05:28:24,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:28:24,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-09-25 05:28:24,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:24,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:28:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:28:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:28:24,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:24,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:24,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:24,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:28:24,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:28:24,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:28:24,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:24,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:28:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:24,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:24,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:24,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:24,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:28:24,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:24,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:24,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:24,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:24,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:24,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:24,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:28:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:24,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:24,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:24,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:24,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:28:24,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:24,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:24,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:24,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:28:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:24,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:24,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:24,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:24,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:28:24,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:24,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:28:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:28:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:24,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 05:28:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:24,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:24,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:28:24,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:28:24,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:24,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 05:28:24,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:24,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:24,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:24,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:24,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:24,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:24,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:24,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:24,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:24,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:24,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:24,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:28:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:24,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:24,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:24,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:24,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-09-25 05:28:24,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445401818] [2020-09-25 05:28:24,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:28:24,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:28:24,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329669061] [2020-09-25 05:28:24,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:28:24,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:24,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:28:24,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:28:24,407 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand 8 states. [2020-09-25 05:28:24,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:24,600 INFO L93 Difference]: Finished difference Result 136 states and 174 transitions. [2020-09-25 05:28:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:28:24,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-09-25 05:28:24,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:24,603 INFO L225 Difference]: With dead ends: 136 [2020-09-25 05:28:24,603 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 05:28:24,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:28:24,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 05:28:24,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-09-25 05:28:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 05:28:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2020-09-25 05:28:24,612 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 85 [2020-09-25 05:28:24,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:24,612 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2020-09-25 05:28:24,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:28:24,612 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2020-09-25 05:28:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 05:28:24,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:24,614 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:28:24,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:28:24,614 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:24,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:24,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1801853252, now seen corresponding path program 1 times [2020-09-25 05:28:24,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:24,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073881479] [2020-09-25 05:28:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:24,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:25,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:25,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking...