/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=1.0 --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_20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:53:14,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:53:14,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:53:14,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:53:14,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:53:14,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:53:14,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:53:14,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:53:14,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:53:14,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:53:14,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:53:14,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:53:14,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:53:14,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:53:14,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:53:14,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:53:14,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:53:14,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:53:14,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:53:14,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:53:14,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:53:14,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:53:14,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:53:14,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:53:14,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:53:14,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:53:14,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:53:14,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:53:14,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:53:14,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:53:14,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:53:14,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:53:14,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:53:14,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:53:14,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:53:14,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:53:14,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:53:14,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:53:14,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:53:14,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:53:14,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:53:14,267 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 08:53:14,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:53:14,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:53:14,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:53:14,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:53:14,305 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:53:14,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:53:14,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:53:14,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:53:14,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:53:14,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:53:14,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:53:14,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:53:14,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:53:14,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:53:14,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:53:14,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:53:14,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:53:14,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:53:14,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:53:14,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:53:14,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:53:14,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:53:14,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:53:14,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:53:14,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:53:14,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:53:14,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:53:14,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:53:14,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:53:14,312 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 08:53:14,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:53:14,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:53:14,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:53:14,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:53:14,780 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:53:14,781 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_20-2.c [2020-09-25 08:53:14,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deaeda3dd/bb3a1c4ee1c94db193d81c5aeda93d41/FLAG273f3d907 [2020-09-25 08:53:15,408 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:53:15,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_20-2.c [2020-09-25 08:53:15,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deaeda3dd/bb3a1c4ee1c94db193d81c5aeda93d41/FLAG273f3d907 [2020-09-25 08:53:15,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deaeda3dd/bb3a1c4ee1c94db193d81c5aeda93d41 [2020-09-25 08:53:15,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:53:15,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:53:15,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:53:15,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:53:15,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:53:15,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:53:15" (1/1) ... [2020-09-25 08:53:15,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678923a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:15, skipping insertion in model container [2020-09-25 08:53:15,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:53:15" (1/1) ... [2020-09-25 08:53:15,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:53:15,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:53:16,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:53:16,045 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:53:16,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:53:16,077 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:53:16,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:16 WrapperNode [2020-09-25 08:53:16,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:53:16,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:53:16,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:53:16,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:53:16,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:16" (1/1) ... [2020-09-25 08:53:16,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:16" (1/1) ... [2020-09-25 08:53:16,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:16" (1/1) ... [2020-09-25 08:53:16,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:16" (1/1) ... [2020-09-25 08:53:16,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:16" (1/1) ... [2020-09-25 08:53:16,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:16" (1/1) ... [2020-09-25 08:53:16,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:16" (1/1) ... [2020-09-25 08:53:16,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:53:16,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:53:16,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:53:16,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:53:16,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:16" (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 08:53:16,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:53:16,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:53:16,286 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 08:53:16,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:53:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:53:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:53:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 08:53:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:53:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:53:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:53:16,496 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:53:16,497 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:53:16,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:53:16 BoogieIcfgContainer [2020-09-25 08:53:16,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:53:16,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:53:16,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:53:16,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:53:16,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:53:15" (1/3) ... [2020-09-25 08:53:16,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4c0bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:53:16, skipping insertion in model container [2020-09-25 08:53:16,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:16" (2/3) ... [2020-09-25 08:53:16,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4c0bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:53:16, skipping insertion in model container [2020-09-25 08:53:16,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:53:16" (3/3) ... [2020-09-25 08:53:16,543 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_20-2.c [2020-09-25 08:53:16,574 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:53:16,585 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:53:16,624 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:53:16,654 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:53:16,654 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:53:16,654 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:53:16,654 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:53:16,654 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:53:16,655 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:53:16,655 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:53:16,655 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:53:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 08:53:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 08:53:16,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:16,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:16,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:16,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 08:53:16,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:16,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958182188] [2020-09-25 08:53:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:16,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:16,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:16,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:53:16,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:16,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 08:53:16,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:16,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:16,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:16,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:16,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:53:16,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:53:16,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:16,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:16,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:16,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:16,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:16,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:53:16,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:16,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:16,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:16,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:16,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:16,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:17,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:17,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:17,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:17,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:17,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 08:53:17,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:17,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:17,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:17,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:17,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:17,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:17,070 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 08:53:17,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958182188] [2020-09-25 08:53:17,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:53:17,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:53:17,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88872976] [2020-09-25 08:53:17,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:53:17,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:17,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:53:17,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:53:17,097 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 08:53:17,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:17,272 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 08:53:17,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:53:17,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 08:53:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:17,292 INFO L225 Difference]: With dead ends: 44 [2020-09-25 08:53:17,293 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 08:53:17,298 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 08:53:17,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 08:53:17,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 08:53:17,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 08:53:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 08:53:17,365 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 08:53:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:17,365 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 08:53:17,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:53:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 08:53:17,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 08:53:17,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:17,368 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 08:53:17,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:53:17,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:17,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:17,370 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 08:53:17,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:17,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108616807] [2020-09-25 08:53:17,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:17,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:17,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:17,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 08:53:17,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:17,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 08:53:17,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:17,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:53:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:17,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:17,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:17,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:17,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:53:17,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:17,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:17,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 08:53:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:17,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:17,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:17,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:17,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:17,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 08:53:17,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:17,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:17,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:17,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:17,632 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 08:53:17,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108616807] [2020-09-25 08:53:17,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:53:17,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:53:17,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890394662] [2020-09-25 08:53:17,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:53:17,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:17,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:53:17,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:53:17,637 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 08:53:17,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:17,707 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 08:53:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:53:17,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 08:53:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:17,710 INFO L225 Difference]: With dead ends: 36 [2020-09-25 08:53:17,710 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 08:53:17,711 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 08:53:17,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 08:53:17,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 08:53:17,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 08:53:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 08:53:17,720 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 08:53:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:17,720 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 08:53:17,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:53:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 08:53:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 08:53:17,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:17,723 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 08:53:17,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:53:17,723 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:17,724 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 08:53:17,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:17,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66142975] [2020-09-25 08:53:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:17,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:17,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:17,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:18,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:18,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 08:53:18,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:18,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-09-25 08:53:18,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:18,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:53:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:18,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:18,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:18,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:18,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:18,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:18,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:18,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:18,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:18,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:18,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:18,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:18,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:18,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:18,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:18,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:18,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:18,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:18,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:18,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:18,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-25 08:53:18,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:18,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:18,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:18,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:18,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:18,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:18,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:18,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:18,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:53:18,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:18,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:18,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:18,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:18,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:18,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:18,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:18,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:53:18,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:18,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:18,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:18,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:18,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:18,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 08:53:18,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66142975] [2020-09-25 08:53:18,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:18,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:53:18,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847426298] [2020-09-25 08:53:18,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:53:18,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:18,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:53:18,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:53:18,878 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 08:53:18,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:18,966 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-25 08:53:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:53:18,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 08:53:18,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:18,969 INFO L225 Difference]: With dead ends: 62 [2020-09-25 08:53:18,969 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 08:53:18,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:53:18,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 08:53:18,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 08:53:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 08:53:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 08:53:18,980 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-25 08:53:18,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:18,981 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 08:53:18,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:53:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 08:53:18,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 08:53:18,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:18,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:18,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:53:18,985 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:18,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:18,985 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 08:53:18,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:18,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003158003] [2020-09-25 08:53:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:18,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 08:53:19,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:19,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-09-25 08:53:19,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:19,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:53:19,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:19,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:19,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:19,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:19,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:19,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:53:19,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:19,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-25 08:53:19,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:19,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:19,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:19,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:19,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:53:19,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:19,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:19,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:19,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:19,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:19,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:19,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:53:19,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 08:53:19,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003158003] [2020-09-25 08:53:19,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:19,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:53:19,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431483907] [2020-09-25 08:53:19,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:53:19,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:19,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:53:19,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:53:19,869 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 08:53:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:19,976 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 08:53:19,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:53:19,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 08:53:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:19,980 INFO L225 Difference]: With dead ends: 50 [2020-09-25 08:53:19,980 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 08:53:19,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:53:19,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 08:53:19,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 08:53:19,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 08:53:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 08:53:19,993 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 34 [2020-09-25 08:53:19,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:19,994 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 08:53:19,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:53:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 08:53:19,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 08:53:19,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:19,996 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 08:53:19,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:53:19,997 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:19,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:19,997 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 08:53:19,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:19,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375226526] [2020-09-25 08:53:19,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:53:20,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:53:20,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-09-25 08:53:20,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:20,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:53:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:20,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:20,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:20,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:20,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:20,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:20,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:20,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:20,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:20,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:20,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:53:20,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:53:20,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-09-25 08:53:20,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:53:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:21,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 08:53:21,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:53:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:21,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:53:21,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:21,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:21,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:21,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,100 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 08:53:21,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375226526] [2020-09-25 08:53:21,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:21,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 08:53:21,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550501466] [2020-09-25 08:53:21,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:53:21,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:21,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:53:21,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:53:21,103 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 6 states. [2020-09-25 08:53:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:21,287 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2020-09-25 08:53:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:53:21,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 08:53:21,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:21,293 INFO L225 Difference]: With dead ends: 94 [2020-09-25 08:53:21,293 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 08:53:21,297 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 08:53:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 08:53:21,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 08:53:21,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 08:53:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-25 08:53:21,328 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 35 [2020-09-25 08:53:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:21,328 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-25 08:53:21,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:53:21,329 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-25 08:53:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 08:53:21,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:21,338 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 08:53:21,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:53:21,338 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:21,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:21,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 2 times [2020-09-25 08:53:21,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:21,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563926438] [2020-09-25 08:53:21,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:26,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:26,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:53:26,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:53:26,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:53:26,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:26,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:26,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:26,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:26,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 08:53:26,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:53:26,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:26,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:26,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:26,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:26,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:26,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:26,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:26,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:26,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:26,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:26,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:26,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:26,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:26,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:26,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:26,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:28,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:53:28,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:53:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1800 [2020-09-25 08:53:28,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:28,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:53:28,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:28,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:28,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:28,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:28,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:28,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 08:53:28,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:28,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:28,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:28,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:28,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:28,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:28,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:28,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:28,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:28,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:53:28,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:28,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:28,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:28,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:28,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:28,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:28,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:28,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:53:28,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:28,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:28,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:28,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:28,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:28,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:28,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:53:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:28,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:28,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:28,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:53:28,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:28,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:28,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:28,545 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 23 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 08:53:28,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563926438] [2020-09-25 08:53:28,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:28,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:53:28,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213541892] [2020-09-25 08:53:28,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:53:28,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:28,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:53:28,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:53:28,551 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 8 states. [2020-09-25 08:53:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:28,739 INFO L93 Difference]: Finished difference Result 128 states and 196 transitions. [2020-09-25 08:53:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:53:28,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-25 08:53:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:28,746 INFO L225 Difference]: With dead ends: 128 [2020-09-25 08:53:28,746 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 08:53:28,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:53:28,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 08:53:28,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-09-25 08:53:28,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 08:53:28,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2020-09-25 08:53:28,775 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 51 [2020-09-25 08:53:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:28,776 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2020-09-25 08:53:28,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:53:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2020-09-25 08:53:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 08:53:28,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:28,781 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:28,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:53:28,788 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:28,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:28,789 INFO L82 PathProgramCache]: Analyzing trace with hash 182663806, now seen corresponding path program 3 times [2020-09-25 08:53:28,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:28,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057635893] [2020-09-25 08:53:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:28,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:33,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 08:53:33,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:53:33,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 08:53:33,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:33,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 08:53:33,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:53:33,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:33,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:33,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:33,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:33,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:33,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:33,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:33,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:33,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:33,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:33,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:38,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:38,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:38,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 08:53:38,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 08:53:38,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 08:53:38,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:38,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:38,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:53:38,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:38,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 08:53:38,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:38,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:38,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:38,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:38,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:38,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:39,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:40,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:53:40,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:53:40,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1751 [2020-09-25 08:53:40,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:40,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:53:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 08:53:40,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:40,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:40,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:40,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:40,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:40,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 08:53:40,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:40,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:40,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:40,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:40,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:40,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:40,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:40,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:40,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:40,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:53:40,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:40,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:40,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:40,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:40,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:40,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:40,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:40,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:53:40,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:40,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:40,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:40,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:53:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:40,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:40,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:40,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:40,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:53:40,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:40,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:40,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:40,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 08:53:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:40,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:40,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:40,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:40,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:53:40,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:40,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:40,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 61 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-25 08:53:40,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057635893] [2020-09-25 08:53:40,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:40,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:53:40,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209746293] [2020-09-25 08:53:40,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:53:40,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:40,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:53:40,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:53:40,834 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand 8 states. [2020-09-25 08:53:41,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:41,029 INFO L93 Difference]: Finished difference Result 166 states and 249 transitions. [2020-09-25 08:53:41,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 08:53:41,030 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-25 08:53:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:41,034 INFO L225 Difference]: With dead ends: 166 [2020-09-25 08:53:41,034 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 08:53:41,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:53:41,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 08:53:41,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 68. [2020-09-25 08:53:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 08:53:41,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2020-09-25 08:53:41,059 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 69 [2020-09-25 08:53:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:41,060 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2020-09-25 08:53:41,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:53:41,060 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2020-09-25 08:53:41,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 08:53:41,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:41,063 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 08:53:41,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:53:41,064 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:41,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:41,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-25 08:53:41,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:41,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044878488] [2020-09-25 08:53:41,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:43,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:43,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:46,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 08:53:46,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 08:53:46,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 08:53:46,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:46,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 08:53:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:53:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:53:46,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:46,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:46,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:46,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:46,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:46,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:46,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:46,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:46,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:48,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:49,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:51,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 08:53:51,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 08:53:51,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 08:53:51,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:51,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:53:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:53:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:53:51,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:51,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:52,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 08:53:52,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:52,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1207 [2020-09-25 08:53:52,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:52,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:52,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:52,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 08:53:52,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:52,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:52,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:52,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:53:52,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-25 08:53:52,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:52,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:53:52,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:52,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:52,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:52,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:52,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:52,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 08:53:52,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:52,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:53:52,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:52,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:52,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:52,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:52,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:52,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:53:52,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:52,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:52,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:52,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:53:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:52,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:52,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:52,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:53:52,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:52,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:52,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:52,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:52,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:52,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:52,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 08:53:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:52,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:54,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:54,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:54,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:54,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:54,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:57,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 08:53:57,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 08:53:57,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 08:53:57,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:57,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:57,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:53:57,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:57,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 08:53:57,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:57,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:57,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:00,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 08:54:00,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:54:00,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3130 [2020-09-25 08:54:00,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:00,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:00,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 08:54:00,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:01,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:01,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:01,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:54:01,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:01,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 08:54:01,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:01,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:01,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:01,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:01,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:54:01,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:01,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:01,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:01,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:01,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:54:01,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:01,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:01,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:01,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:01,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:01,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:01,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:54:01,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:01,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:01,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:01,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:54:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:01,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:01,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:01,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:01,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:54:01,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:01,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:54:01,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:01,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 08:54:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:01,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:01,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:01,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:01,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:54:01,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:01,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:01,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:01,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 144 proven. 186 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-09-25 08:54:01,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044878488] [2020-09-25 08:54:01,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:01,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 08:54:01,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999163949] [2020-09-25 08:54:01,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 08:54:01,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:01,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 08:54:01,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:54:01,171 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand 12 states. [2020-09-25 08:54:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:01,539 INFO L93 Difference]: Finished difference Result 216 states and 295 transitions. [2020-09-25 08:54:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:54:01,540 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 123 [2020-09-25 08:54:01,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:01,544 INFO L225 Difference]: With dead ends: 216 [2020-09-25 08:54:01,544 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 08:54:01,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:54:01,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 08:54:01,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 128. [2020-09-25 08:54:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-25 08:54:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 170 transitions. [2020-09-25 08:54:01,563 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 170 transitions. Word has length 123 [2020-09-25 08:54:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:01,564 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 170 transitions. [2020-09-25 08:54:01,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 08:54:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 170 transitions. [2020-09-25 08:54:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 08:54:01,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:01,566 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 08:54:01,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:54:01,567 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:01,567 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 5 times [2020-09-25 08:54:01,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:01,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558008387] [2020-09-25 08:54:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:01,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:03,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:06,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 08:54:06,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:54:06,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:54:06,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:06,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:06,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 08:54:06,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:06,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:06,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:06,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:06,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:06,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:06,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:06,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:06,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:06,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:08,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:11,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 08:54:11,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:54:11,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 08:54:11,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:11,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:11,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:11,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:11,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 08:54:11,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:11,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking...