/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:19:33,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:19:33,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:19:33,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:19:33,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:19:33,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:19:33,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:19:33,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:19:33,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:19:33,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:19:33,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:19:33,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:19:33,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:19:33,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:19:33,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:19:33,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:19:33,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:19:33,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:19:33,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:19:33,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:19:33,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:19:33,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:19:33,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:19:33,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:19:33,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:19:33,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:19:33,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:19:33,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:19:33,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:19:33,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:19:33,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:19:33,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:19:33,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:19:33,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:19:33,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:19:33,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:19:33,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:19:33,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:19:33,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:19:33,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:19:33,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:19:33,275 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 04:19:33,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:19:33,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:19:33,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:19:33,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:19:33,303 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:19:33,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:19:33,303 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:19:33,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:19:33,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:19:33,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:19:33,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:19:33,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:19:33,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:19:33,305 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:19:33,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:19:33,305 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:19:33,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:19:33,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:19:33,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:19:33,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:19:33,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:19:33,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:19:33,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:19:33,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:19:33,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:19:33,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:19:33,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:19:33,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:19:33,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:19:33,308 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=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:19:33,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:19:33,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:19:33,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:19:33,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:19:33,840 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:19:33,841 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-09-25 04:19:33,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b69e10b5/982bae42301c4e71b01d686de348ee1d/FLAG443ba8556 [2020-09-25 04:19:34,486 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:19:34,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-09-25 04:19:34,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b69e10b5/982bae42301c4e71b01d686de348ee1d/FLAG443ba8556 [2020-09-25 04:19:34,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b69e10b5/982bae42301c4e71b01d686de348ee1d [2020-09-25 04:19:34,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:19:34,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:19:34,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:19:34,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:19:34,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:19:34,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:19:34" (1/1) ... [2020-09-25 04:19:34,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b86a7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:34, skipping insertion in model container [2020-09-25 04:19:34,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:19:34" (1/1) ... [2020-09-25 04:19:34,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:19:34,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:19:35,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:19:35,114 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:19:35,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:19:35,149 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:19:35,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:35 WrapperNode [2020-09-25 04:19:35,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:19:35,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:19:35,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:19:35,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:19:35,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:35" (1/1) ... [2020-09-25 04:19:35,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:35" (1/1) ... [2020-09-25 04:19:35,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:35" (1/1) ... [2020-09-25 04:19:35,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:35" (1/1) ... [2020-09-25 04:19:35,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:35" (1/1) ... [2020-09-25 04:19:35,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:35" (1/1) ... [2020-09-25 04:19:35,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:35" (1/1) ... [2020-09-25 04:19:35,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:19:35,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:19:35,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:19:35,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:19:35,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:35" (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 04:19:35,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:19:35,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:19:35,340 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 04:19:35,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:19:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:19:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:19:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 04:19:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:19:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:19:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:19:35,548 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:19:35,548 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:19:35,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:19:35 BoogieIcfgContainer [2020-09-25 04:19:35,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:19:35,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:19:35,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:19:35,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:19:35,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:19:34" (1/3) ... [2020-09-25 04:19:35,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2395d25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:19:35, skipping insertion in model container [2020-09-25 04:19:35,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:35" (2/3) ... [2020-09-25 04:19:35,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2395d25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:19:35, skipping insertion in model container [2020-09-25 04:19:35,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:19:35" (3/3) ... [2020-09-25 04:19:35,595 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2020-09-25 04:19:35,622 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:19:35,646 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:19:35,678 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:19:35,706 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:19:35,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:19:35,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:19:35,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:19:35,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:19:35,708 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:19:35,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:19:35,708 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:19:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 04:19:35,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 04:19:35,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:35,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:35,739 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:35,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:35,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 04:19:35,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:35,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526068207] [2020-09-25 04:19:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:35,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:19:35,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:35,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 04:19:35,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:35,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:35,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:35,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:19:35,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:19:35,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:36,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:36,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:36,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:36,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:19:36,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:36,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:36,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:36,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:36,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:36,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:36,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:36,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:36,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:19:36,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:36,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:36,102 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 04:19:36,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526068207] [2020-09-25 04:19:36,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:19:36,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:19:36,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857919995] [2020-09-25 04:19:36,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:19:36,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:36,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:19:36,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:19:36,133 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 04:19:36,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:36,253 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 04:19:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:19:36,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 04:19:36,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:36,269 INFO L225 Difference]: With dead ends: 44 [2020-09-25 04:19:36,269 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 04:19:36,273 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 04:19:36,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 04:19:36,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 04:19:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 04:19:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 04:19:36,328 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 04:19:36,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:36,329 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 04:19:36,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:19:36,329 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 04:19:36,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 04:19:36,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:36,332 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 04:19:36,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:19:36,332 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:36,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:36,333 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 04:19:36,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:36,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974266267] [2020-09-25 04:19:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:36,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:19:36,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:36,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 04:19:36,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:36,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:36,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:36,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:19:36,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:36,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:36,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:36,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:36,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:36,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:36,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:36,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:36,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:36,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:36,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:19:36,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:36,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:36,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:36,591 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 04:19:36,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974266267] [2020-09-25 04:19:36,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:19:36,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:19:36,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161272557] [2020-09-25 04:19:36,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:19:36,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:36,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:19:36,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:19:36,595 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 04:19:36,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:36,672 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 04:19:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:19:36,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 04:19:36,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:36,675 INFO L225 Difference]: With dead ends: 36 [2020-09-25 04:19:36,675 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 04:19:36,676 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 04:19:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 04:19:36,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 04:19:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 04:19:36,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 04:19:36,684 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 04:19:36,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:36,685 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 04:19:36,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:19:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 04:19:36,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 04:19:36,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:36,687 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 04:19:36,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:19:36,688 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:36,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:36,688 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 04:19:36,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:36,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482612679] [2020-09-25 04:19:36,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:37,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:19:37,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:37,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-09-25 04:19:37,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:37,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:37,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:37,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:37,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:19:37,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:19:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:37,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:37,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:37,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:37,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:37,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:37,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:37,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:37,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:37,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:37,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:37,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:37,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:37,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-25 04:19:37,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:37,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:19:37,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:37,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:37,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:37,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:37,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:37,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:19:37,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:37,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:37,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:37,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:37,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:37,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:37,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:37,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:37,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:19:37,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:37,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:37,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:37,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 04:19:37,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482612679] [2020-09-25 04:19:37,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:37,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:37,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897430324] [2020-09-25 04:19:37,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:37,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:37,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:37,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:37,705 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 04:19:37,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:37,789 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-25 04:19:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:37,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 04:19:37,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:37,792 INFO L225 Difference]: With dead ends: 44 [2020-09-25 04:19:37,792 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 04:19:37,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:19:37,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 04:19:37,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-25 04:19:37,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 04:19:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 04:19:37,803 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 04:19:37,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:37,804 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 04:19:37,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:37,804 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 04:19:37,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 04:19:37,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:37,806 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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 04:19:37,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:19:37,806 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:37,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:37,807 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 04:19:37,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:37,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639788210] [2020-09-25 04:19:37,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:37,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:38,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:19:38,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:38,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-09-25 04:19:38,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:38,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:38,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:38,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:38,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:19:38,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:38,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:38,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:38,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:38,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:38,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:38,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:38,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:38,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:38,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:38,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:19:38,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:38,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-09-25 04:19:38,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:38,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:19:38,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:38,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:38,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:38,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:38,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:19:38,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:38,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:38,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:38,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:38,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:38,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:38,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:19:38,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:38,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:38,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 04:19:38,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639788210] [2020-09-25 04:19:38,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:38,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:38,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418590180] [2020-09-25 04:19:38,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:38,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:38,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:38,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:38,885 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-09-25 04:19:39,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:39,025 INFO L93 Difference]: Finished difference Result 88 states and 137 transitions. [2020-09-25 04:19:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:39,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 04:19:39,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:39,029 INFO L225 Difference]: With dead ends: 88 [2020-09-25 04:19:39,029 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 04:19:39,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:19:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 04:19:39,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 04:19:39,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:19:39,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-09-25 04:19:39,046 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 35 [2020-09-25 04:19:39,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:39,046 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-09-25 04:19:39,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-09-25 04:19:39,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 04:19:39,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:39,050 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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 04:19:39,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:19:39,051 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:39,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:39,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-25 04:19:39,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:39,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382120532] [2020-09-25 04:19:39,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:39,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:44,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:19:44,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:19:44,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:19:44,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:44,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:44,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:19:44,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:44,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:44,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:44,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:44,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:44,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:44,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:44,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:44,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:44,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:19:48,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:19:48,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4059 [2020-09-25 04:19:48,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:48,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:48,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:19:48,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:48,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:48,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:48,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 04:19:48,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:19:48,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:48,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:48,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:48,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:19:48,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:48,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:48,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:48,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:48,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:48,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:48,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:48,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:48,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:48,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:19:48,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:48,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:48,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 04:19:48,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382120532] [2020-09-25 04:19:48,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:48,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:48,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688811824] [2020-09-25 04:19:48,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:48,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:48,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:48,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:48,343 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 7 states. [2020-09-25 04:19:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:48,481 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2020-09-25 04:19:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:48,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 04:19:48,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:48,485 INFO L225 Difference]: With dead ends: 70 [2020-09-25 04:19:48,485 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 04:19:48,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:19:48,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 04:19:48,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-09-25 04:19:48,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 04:19:48,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 81 transitions. [2020-09-25 04:19:48,499 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 81 transitions. Word has length 51 [2020-09-25 04:19:48,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:48,499 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 81 transitions. [2020-09-25 04:19:48,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:48,500 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 81 transitions. [2020-09-25 04:19:48,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 04:19:48,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:48,503 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:48,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:19:48,504 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:48,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:48,504 INFO L82 PathProgramCache]: Analyzing trace with hash 809102171, now seen corresponding path program 2 times [2020-09-25 04:19:48,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:48,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097650181] [2020-09-25 04:19:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:49,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:50,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:50,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:50,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:51,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:51,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:53,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 04:19:53,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 04:19:53,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 04:19:53,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:53,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:53,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:53,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 04:19:53,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:19:53,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:53,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:53,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:53,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:53,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:53,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:53,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:53,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:53,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:53,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:58,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 04:19:58,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:19:58,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:19:58,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:58,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 04:19:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:19:58,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:58,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:58,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:58,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 04:19:58,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:58,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:58,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:58,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:58,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:58,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:58,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:58,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:58,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:58,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:58,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:58,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:58,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:58,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:58,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:58,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:58,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:58,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:58,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:58,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:19:58,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-25 04:19:58,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:58,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:19:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:19:58,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:58,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:58,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:58,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:58,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:58,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:58,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:19:58,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:58,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:58,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:59,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:59,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:59,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:59,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:59,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:59,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:59,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 04:19:59,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:59,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:19:59,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:59,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:59,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:59,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:59,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:59,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:19:59,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:59,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:59,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:59,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:59,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:59,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:59,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:59,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:59,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:59,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:59,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:59,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:19:59,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:59,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:59,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 91 proven. 13 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-09-25 04:19:59,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097650181] [2020-09-25 04:19:59,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:59,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:59,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245377040] [2020-09-25 04:19:59,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:59,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:59,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:59,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:59,164 INFO L87 Difference]: Start difference. First operand 58 states and 81 transitions. Second operand 6 states. [2020-09-25 04:19:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:59,295 INFO L93 Difference]: Finished difference Result 118 states and 187 transitions. [2020-09-25 04:19:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:59,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-09-25 04:19:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:59,297 INFO L225 Difference]: With dead ends: 118 [2020-09-25 04:19:59,297 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 04:19:59,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:59,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 04:19:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-25 04:19:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:19:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2020-09-25 04:19:59,308 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 85 [2020-09-25 04:19:59,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:59,309 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2020-09-25 04:19:59,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:59,310 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2020-09-25 04:19:59,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 04:19:59,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:59,315 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:59,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:19:59,315 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:59,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:59,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1086233509, now seen corresponding path program 3 times [2020-09-25 04:19:59,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:59,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879645548] [2020-09-25 04:19:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:59,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:59,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:01,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:01,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:01,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:02,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:02,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:02,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:03,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:03,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:04,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:04,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 04:20:04,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 04:20:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:20:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:04,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 04:20:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:04,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:04,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:04,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:04,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:04,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:04,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:04,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:04,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:04,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:04,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:04,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:04,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:04,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:04,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:04,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:04,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:05,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:05,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:05,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:09,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 04:20:09,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:20:09,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:20:09,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:09,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:20:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:09,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:09,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:09,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:09,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:20:09,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:09,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:20:09,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:09,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:09,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:09,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:20:09,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:09,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:09,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:09,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:09,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:09,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:09,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:20:09,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:09,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:09,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:20:09,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:20:09,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:09,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:20:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:09,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:09,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:09,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:20:09,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:09,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:09,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:09,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:20:09,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:09,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:09,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:20:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:09,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:10,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:20:10,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:20:10,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-09-25 04:20:10,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:10,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:10,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 04:20:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:10,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:10,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:10,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:10,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:20:10,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:10,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 04:20:10,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:10,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:10,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:10,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:10,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:10,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:10,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:10,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:10,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:10,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:20:10,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:10,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:10,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:10,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:10,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:10,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:10,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:20:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:10,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:10,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:10,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:10,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:20:10,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:10,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:10,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:20:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:10,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:10,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:10,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:10,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:20:10,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:10,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:10,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:10,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-25 04:20:10,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879645548] [2020-09-25 04:20:10,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:10,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:20:10,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577569345] [2020-09-25 04:20:10,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:20:10,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:10,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:20:10,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:20:10,338 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 6 states. [2020-09-25 04:20:10,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:10,414 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2020-09-25 04:20:10,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:20:10,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-09-25 04:20:10,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:10,416 INFO L225 Difference]: With dead ends: 76 [2020-09-25 04:20:10,416 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 04:20:10,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:20:10,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 04:20:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 04:20:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 04:20:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 04:20:10,424 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 85 [2020-09-25 04:20:10,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:10,424 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 04:20:10,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:20:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 04:20:10,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 04:20:10,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:10,426 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:10,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:20:10,427 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:10,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:10,428 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 4 times [2020-09-25 04:20:10,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:10,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257123353] [2020-09-25 04:20:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:10,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:13,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:13,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:15,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 04:20:15,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:20:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:20:15,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:15,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:20:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:15,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:15,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:15,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:15,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:15,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:15,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:15,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:15,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:15,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:15,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:15,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:16,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:16,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:16,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:16,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:16,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 04:20:20,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:20:20,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:20:20,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:20:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:20:20,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:20,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:20,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:20:20,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:20:20,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-25 04:20:20,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:20:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:20,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:20:20,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:20,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:20,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:20,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:20:20,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:20:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:20,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:20:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:20,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:20,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:20:20,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:20:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:20,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:20,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:20:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:21,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:21,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:21,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:22,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:22,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 04:20:22,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:20:22,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1463 [2020-09-25 04:20:22,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:22,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:20:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:20:22,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 04:20:22,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:22,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:22,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:22,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:20:22,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:22,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:20:22,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:22,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:20:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:20:22,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:22,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:20:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:22,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:22,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:22,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:20:22,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:22,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:22,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:20:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:22,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:22,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:22,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:22,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:20:22,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:22,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:22,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:22,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:20:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:22,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:22,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:22,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:20:22,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:22,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:20:22,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:22,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:20:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:20:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 55 proven. 74 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-09-25 04:20:22,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257123353] [2020-09-25 04:20:22,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:22,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:20:22,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011253278] [2020-09-25 04:20:22,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:20:22,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:22,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:20:22,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:20:22,559 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 8 states. [2020-09-25 04:20:22,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:22,746 INFO L93 Difference]: Finished difference Result 91 states and 115 transitions. [2020-09-25 04:20:22,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:20:22,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-09-25 04:20:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:22,750 INFO L225 Difference]: With dead ends: 91 [2020-09-25 04:20:22,753 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 04:20:22,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:20:22,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 04:20:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-09-25 04:20:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 04:20:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-09-25 04:20:22,767 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 87 [2020-09-25 04:20:22,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:22,767 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-09-25 04:20:22,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:20:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-09-25 04:20:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 04:20:22,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:22,769 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:22,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:20:22,770 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:22,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:22,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 5 times [2020-09-25 04:20:22,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:22,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939213157] [2020-09-25 04:20:22,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:22,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:22,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:22,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:22,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:23,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:23,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:23,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:24,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:24,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking...