/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/id_o100.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:20:55,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:20:55,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:20:56,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:20:56,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:20:56,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:20:56,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:20:56,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:20:56,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:20:56,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:20:56,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:20:56,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:20:56,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:20:56,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:20:56,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:20:56,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:20:56,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:20:56,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:20:56,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:20:56,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:20:56,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:20:56,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:20:56,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:20:56,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:20:56,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:20:56,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:20:56,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:20:56,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:20:56,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:20:56,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:20:56,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:20:56,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:20:56,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:20:56,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:20:56,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:20:56,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:20:56,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:20:56,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:20:56,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:20:56,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:20:56,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:20:56,061 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 [2020-09-24 19:20:56,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:20:56,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:20:56,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:20:56,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:20:56,089 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:20:56,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:20:56,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:20:56,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:20:56,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:20:56,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:20:56,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:20:56,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:20:56,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:20:56,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:20:56,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:20:56,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:20:56,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:20:56,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:20:56,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:20:56,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:20:56,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:20:56,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:20:56,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:20:56,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:20:56,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:20:56,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:20:56,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:20:56,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:20:56,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:20:56,094 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:20:56,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:20:56,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:20:56,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:20:56,594 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:20:56,596 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:20:56,597 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-24 19:20:56,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72b132caa/27dcc9d25a5b4d12b5d29be2b8f04e8f/FLAGf9f32073e [2020-09-24 19:20:57,194 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:20:57,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-24 19:20:57,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72b132caa/27dcc9d25a5b4d12b5d29be2b8f04e8f/FLAGf9f32073e [2020-09-24 19:20:57,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72b132caa/27dcc9d25a5b4d12b5d29be2b8f04e8f [2020-09-24 19:20:57,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:20:57,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:20:57,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:20:57,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:20:57,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:20:57,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:20:57" (1/1) ... [2020-09-24 19:20:57,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee2931e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:20:57, skipping insertion in model container [2020-09-24 19:20:57,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:20:57" (1/1) ... [2020-09-24 19:20:57,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:20:57,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:20:57,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:20:57,801 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:20:57,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:20:57,835 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:20:57,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:20:57 WrapperNode [2020-09-24 19:20:57,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:20:57,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:20:57,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:20:57,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:20:57,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:20:57" (1/1) ... [2020-09-24 19:20:57,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:20:57" (1/1) ... [2020-09-24 19:20:57,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:20:57" (1/1) ... [2020-09-24 19:20:57,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:20:57" (1/1) ... [2020-09-24 19:20:57,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:20:57" (1/1) ... [2020-09-24 19:20:57,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:20:57" (1/1) ... [2020-09-24 19:20:57,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:20:57" (1/1) ... [2020-09-24 19:20:57,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:20:57,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:20:57,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:20:57,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:20:57,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:20:57" (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 [2020-09-24 19:20:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:20:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:20:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 19:20:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:20:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 19:20:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:20:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 19:20:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:20:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:20:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:20:58,213 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:20:58,213 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 19:20:58,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:20:58 BoogieIcfgContainer [2020-09-24 19:20:58,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:20:58,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:20:58,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:20:58,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:20:58,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:20:57" (1/3) ... [2020-09-24 19:20:58,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e459d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:20:58, skipping insertion in model container [2020-09-24 19:20:58,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:20:57" (2/3) ... [2020-09-24 19:20:58,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e459d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:20:58, skipping insertion in model container [2020-09-24 19:20:58,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:20:58" (3/3) ... [2020-09-24 19:20:58,230 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o100.c [2020-09-24 19:20:58,239 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:20:58,247 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:20:58,271 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:20:58,302 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:20:58,303 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:20:58,303 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:20:58,303 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:20:58,303 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:20:58,303 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:20:58,304 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:20:58,304 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:20:58,326 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-24 19:20:58,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 19:20:58,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:20:58,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:20:58,335 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:20:58,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:20:58,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-24 19:20:58,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:20:58,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533126810] [2020-09-24 19:20:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:20:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:58,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:58,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:58,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:20:58,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:58,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 19:20:58,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:20:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:20:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:20:58,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:20:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:20:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:58,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:58,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:58,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:20:58,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:58,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:58,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:58,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:58,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:20:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:58,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:58,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:58,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:58,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:58,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:20:58,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:58,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:20:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:20:58,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:58,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:20:58,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533126810] [2020-09-24 19:20:58,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:20:58,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:20:58,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32518367] [2020-09-24 19:20:58,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:20:58,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:20:58,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:20:58,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:20:58,833 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-24 19:20:58,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:20:58,905 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 19:20:58,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:20:58,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 19:20:58,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:20:58,921 INFO L225 Difference]: With dead ends: 37 [2020-09-24 19:20:58,922 INFO L226 Difference]: Without dead ends: 22 [2020-09-24 19:20:58,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:20:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-24 19:20:58,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-24 19:20:58,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-24 19:20:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-24 19:20:58,976 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-24 19:20:58,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:20:58,977 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-24 19:20:58,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:20:58,978 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-24 19:20:58,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 19:20:58,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:20:58,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:20:58,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:20:58,981 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:20:58,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:20:58,981 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-24 19:20:58,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:20:58,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550202233] [2020-09-24 19:20:58,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:20:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:59,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:59,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:59,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:20:59,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:59,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-24 19:20:59,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:59,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:20:59,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:20:59,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:20:59,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:20:59,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:20:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:59,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:59,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:59,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:20:59,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:20:59,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:20:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:20:59,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:20:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:20:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:59,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:59,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:20:59,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 19:20:59,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:20:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:20:59,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:59,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:20:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:59,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:59,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:20:59,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:59,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:20:59,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:20:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:20:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:20:59,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:20:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 19:20:59,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550202233] [2020-09-24 19:20:59,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:20:59,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:20:59,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816591367] [2020-09-24 19:20:59,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:20:59,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:20:59,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:20:59,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:20:59,552 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-24 19:20:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:20:59,622 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-24 19:20:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:20:59,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-24 19:20:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:20:59,625 INFO L225 Difference]: With dead ends: 31 [2020-09-24 19:20:59,625 INFO L226 Difference]: Without dead ends: 26 [2020-09-24 19:20:59,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:20:59,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-24 19:20:59,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-24 19:20:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-24 19:20:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-24 19:20:59,636 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-24 19:20:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:20:59,637 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-24 19:20:59,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:20:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-24 19:20:59,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 19:20:59,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:20:59,639 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:20:59,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:20:59,640 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:20:59,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:20:59,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-24 19:20:59,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:20:59,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188725481] [2020-09-24 19:20:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:20:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:20:59,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:20:59,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:20:59,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 19:20:59,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:20:59,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-24 19:20:59,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:20:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:20:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 19:20:59,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:20:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:00,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:00,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:00,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:00,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:00,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:21:00,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:00,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:00,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:00,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:00,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:00,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:00,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 19:21:00,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:00,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:00,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:00,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:00,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:00,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:00,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:21:00,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:00,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:00,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:00,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:00,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:00,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:00,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:21:00,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:00,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:00,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:00,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 19:21:00,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188725481] [2020-09-24 19:21:00,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:00,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:21:00,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634722676] [2020-09-24 19:21:00,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:21:00,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:00,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:21:00,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:21:00,354 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-24 19:21:00,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:00,477 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-24 19:21:00,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:21:00,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-24 19:21:00,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:00,480 INFO L225 Difference]: With dead ends: 35 [2020-09-24 19:21:00,484 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 19:21:00,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:21:00,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 19:21:00,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 19:21:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 19:21:00,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 19:21:00,495 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-24 19:21:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:00,496 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 19:21:00,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:21:00,496 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 19:21:00,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 19:21:00,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:00,499 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:21:00,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:21:00,500 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:00,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:00,500 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-24 19:21:00,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:00,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259434126] [2020-09-24 19:21:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:00,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:00,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:00,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:21:00,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:00,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-24 19:21:00,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:21:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 19:21:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 19:21:00,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:00,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:00,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:00,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:00,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:00,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:00,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:00,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:00,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:01,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:01,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:01,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:01,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 19:21:01,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:01,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:01,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:01,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:01,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:01,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:01,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:01,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:01,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 19:21:01,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:01,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:01,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:01,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:01,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:01,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:01,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:01,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:01,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 19:21:01,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:01,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:01,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:01,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:01,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:01,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:01,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:21:01,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:01,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:01,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 19:21:01,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259434126] [2020-09-24 19:21:01,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:01,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 19:21:01,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945096465] [2020-09-24 19:21:01,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:21:01,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:01,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:21:01,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:21:01,335 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-24 19:21:01,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:01,460 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 19:21:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:21:01,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-24 19:21:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:01,463 INFO L225 Difference]: With dead ends: 39 [2020-09-24 19:21:01,463 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 19:21:01,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:21:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 19:21:01,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-24 19:21:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 19:21:01,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 19:21:01,471 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-24 19:21:01,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:01,471 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 19:21:01,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 19:21:01,472 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 19:21:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 19:21:01,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:01,473 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:21:01,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:21:01,474 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:01,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:01,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-24 19:21:01,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:01,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967536309] [2020-09-24 19:21:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:01,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:01,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:01,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 19:21:01,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:01,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-24 19:21:01,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:01,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:21:01,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 19:21:01,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:21:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:01,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:01,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:01,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:01,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:01,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:01,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:01,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:01,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:01,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:02,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:02,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:02,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:02,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-24 19:21:02,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:02,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:02,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:02,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:02,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:02,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:02,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 19:21:02,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:02,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:02,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:02,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:02,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:02,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:02,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:02,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 19:21:02,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:02,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:02,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:02,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:02,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:02,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:02,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:21:02,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:02,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:02,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:02,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:02,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:02,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:02,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:21:02,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:02,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:02,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:02,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 19:21:02,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967536309] [2020-09-24 19:21:02,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:02,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 19:21:02,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978712236] [2020-09-24 19:21:02,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 19:21:02,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:02,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 19:21:02,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:21:02,591 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-24 19:21:02,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:02,773 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-24 19:21:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:21:02,774 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-24 19:21:02,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:02,775 INFO L225 Difference]: With dead ends: 43 [2020-09-24 19:21:02,775 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 19:21:02,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:21:02,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 19:21:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 19:21:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 19:21:02,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 19:21:02,784 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-24 19:21:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:02,784 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 19:21:02,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 19:21:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 19:21:02,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 19:21:02,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:02,786 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:21:02,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:21:02,787 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:02,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:02,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-24 19:21:02,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:02,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202105647] [2020-09-24 19:21:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:02,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:03,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:03,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 19:21:03,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:03,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-24 19:21:03,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:03,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 19:21:03,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 19:21:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:21:03,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:03,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:03,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:03,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:03,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:03,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:03,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:03,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:03,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:03,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:03,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:03,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-24 19:21:03,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:03,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:03,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:03,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:03,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:03,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:03,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-24 19:21:03,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:03,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:03,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:03,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:04,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:04,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:04,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:04,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-24 19:21:04,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:04,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:04,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:04,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:04,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:04,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:04,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:04,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 19:21:04,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:04,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:04,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:04,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:04,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:04,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:04,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:04,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:04,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:21:04,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:04,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:04,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:04,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:04,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:04,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:04,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:04,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:04,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:04,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:21:04,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:04,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:04,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-09-24 19:21:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 19:21:04,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202105647] [2020-09-24 19:21:04,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:04,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 19:21:04,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401847329] [2020-09-24 19:21:04,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 19:21:04,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:04,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 19:21:04,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:21:04,423 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-24 19:21:04,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:04,643 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-24 19:21:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 19:21:04,643 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-24 19:21:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:04,644 INFO L225 Difference]: With dead ends: 47 [2020-09-24 19:21:04,645 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 19:21:04,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-24 19:21:04,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 19:21:04,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 19:21:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 19:21:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-24 19:21:04,652 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-24 19:21:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:04,653 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-24 19:21:04,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 19:21:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-24 19:21:04,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 19:21:04,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:04,654 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:21:04,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:21:04,655 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:04,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-24 19:21:04,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:04,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665619647] [2020-09-24 19:21:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:04,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:05,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:05,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:21:05,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-09-24 19:21:05,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 19:21:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 19:21:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:21:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:05,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:05,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:05,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:05,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:05,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:05,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:05,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:05,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:05,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:05,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:05,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:05,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:05,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:05,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:05,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-09-24 19:21:05,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:05,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:05,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:05,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:05,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:05,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-24 19:21:05,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:05,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:05,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:05,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:06,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:06,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:06,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:06,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:06,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-24 19:21:06,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:06,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:06,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:06,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:06,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:06,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:06,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-24 19:21:06,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:06,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:06,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:06,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:06,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:06,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:06,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:06,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:06,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:06,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:06,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 19:21:06,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:06,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:06,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:06,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:06,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:06,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:06,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:06,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:06,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:06,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 19:21:06,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:06,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:06,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:06,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:06,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:06,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:21:06,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:06,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:06,807 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-24 19:21:06,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665619647] [2020-09-24 19:21:06,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:06,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 19:21:06,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404262520] [2020-09-24 19:21:06,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 19:21:06,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:06,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 19:21:06,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:21:06,811 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-24 19:21:07,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:07,095 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-24 19:21:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 19:21:07,096 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 19:21:07,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:07,097 INFO L225 Difference]: With dead ends: 51 [2020-09-24 19:21:07,098 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 19:21:07,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-24 19:21:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 19:21:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-24 19:21:07,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 19:21:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-24 19:21:07,105 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-24 19:21:07,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:07,106 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-24 19:21:07,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 19:21:07,106 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-24 19:21:07,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 19:21:07,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:07,108 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:21:07,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:21:07,108 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:07,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:07,109 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-24 19:21:07,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:07,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857874300] [2020-09-24 19:21:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:07,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:07,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:07,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:21:07,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:07,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-09-24 19:21:07,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:07,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 19:21:07,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 19:21:07,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:21:07,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:07,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:07,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:07,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:07,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:07,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:07,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:07,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:07,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:07,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:08,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:08,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:08,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-09-24 19:21:08,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:08,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:08,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:08,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:08,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:08,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:08,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-09-24 19:21:08,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:08,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:08,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:08,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:09,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:09,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:09,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:09,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-24 19:21:09,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:09,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:09,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:09,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:09,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:09,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-24 19:21:09,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:09,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:09,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:09,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:09,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:09,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:09,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:09,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:09,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:09,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:09,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 19:21:09,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:09,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:09,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:09,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:09,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:09,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:09,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 19:21:09,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:09,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:09,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:09,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:09,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:09,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:09,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:09,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:21:09,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:09,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:09,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:09,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:09,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:09,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:09,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:21:09,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:09,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:09,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:09,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:09,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-24 19:21:09,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857874300] [2020-09-24 19:21:09,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:09,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 19:21:09,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428258375] [2020-09-24 19:21:09,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 19:21:09,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:09,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 19:21:09,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:21:09,811 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-24 19:21:10,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:10,165 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-24 19:21:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 19:21:10,166 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-24 19:21:10,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:10,167 INFO L225 Difference]: With dead ends: 55 [2020-09-24 19:21:10,167 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 19:21:10,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-24 19:21:10,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 19:21:10,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 19:21:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 19:21:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 19:21:10,181 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-24 19:21:10,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:10,182 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 19:21:10,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 19:21:10,182 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 19:21:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 19:21:10,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:10,187 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:21:10,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:21:10,187 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:10,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:10,187 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-24 19:21:10,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:10,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109570475] [2020-09-24 19:21:10,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:10,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:10,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 19:21:10,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:10,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-09-24 19:21:10,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 19:21:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 19:21:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 19:21:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:10,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:10,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:10,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:10,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:10,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:10,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:10,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:10,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:10,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:11,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:11,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:11,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:21:11,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-09-24 19:21:11,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:21:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:21:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:11,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:11,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:12,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:12,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:12,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-09-24 19:21:12,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:12,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:12,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:12,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:12,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:12,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:12,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-09-24 19:21:12,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:12,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:12,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:12,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:12,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:12,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:12,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:12,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-24 19:21:12,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:12,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:12,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:12,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:12,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:12,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:13,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:13,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:13,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:13,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 19:21:13,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:13,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:13,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:13,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:13,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:13,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:13,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:13,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 19:21:13,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:13,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:13,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:13,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:13,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:13,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:13,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:13,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 19:21:13,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:13,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:13,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:13,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:13,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:13,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:13,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:13,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:13,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:21:13,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:13,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:13,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:13,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:13,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:13,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:13,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:13,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:13,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:21:13,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:13,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-24 19:21:13,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109570475] [2020-09-24 19:21:13,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:13,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 19:21:13,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179070912] [2020-09-24 19:21:13,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 19:21:13,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:13,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 19:21:13,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-24 19:21:13,595 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-24 19:21:14,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:14,039 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 19:21:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 19:21:14,040 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-24 19:21:14,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:14,041 INFO L225 Difference]: With dead ends: 59 [2020-09-24 19:21:14,041 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 19:21:14,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-24 19:21:14,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 19:21:14,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 19:21:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 19:21:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-24 19:21:14,060 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-24 19:21:14,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:14,060 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-24 19:21:14,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 19:21:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-24 19:21:14,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 19:21:14,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:14,066 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:21:14,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:21:14,069 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:14,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-24 19:21:14,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:14,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604542034] [2020-09-24 19:21:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:14,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:14,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:14,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 19:21:14,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:14,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-09-24 19:21:14,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 19:21:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 19:21:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:14,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:14,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:14,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:14,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:14,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:14,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:14,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:14,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:14,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:15,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:15,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:15,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:21:15,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:15,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-09-24 19:21:15,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:15,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 19:21:15,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:21:15,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:15,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:15,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:16,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:16,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:21:16,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:16,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-09-24 19:21:16,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:16,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:21:16,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:21:16,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:16,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:16,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:17,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:17,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:17,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:17,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-09-24 19:21:17,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:17,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:17,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:17,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:17,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:17,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:17,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:17,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-24 19:21:17,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:17,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:17,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:17,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:17,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-24 19:21:17,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:17,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:17,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:17,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:17,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:17,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:17,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:17,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-24 19:21:17,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:17,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:17,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:18,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:18,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:18,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:18,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:18,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 19:21:18,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:18,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:18,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:18,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:18,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:18,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:18,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:18,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 19:21:18,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:18,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:18,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:18,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:18,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:18,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:18,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:21:18,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:18,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:18,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:18,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:18,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:18,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:18,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:18,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:21:18,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:18,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:18,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-24 19:21:18,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604542034] [2020-09-24 19:21:18,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:18,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 19:21:18,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791605813] [2020-09-24 19:21:18,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 19:21:18,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:18,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 19:21:18,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-24 19:21:18,536 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-24 19:21:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:19,039 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-24 19:21:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 19:21:19,040 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-24 19:21:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:19,041 INFO L225 Difference]: With dead ends: 63 [2020-09-24 19:21:19,041 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 19:21:19,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 19:21:19,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 19:21:19,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 19:21:19,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 19:21:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 19:21:19,049 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-24 19:21:19,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:19,049 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 19:21:19,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 19:21:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 19:21:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 19:21:19,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:19,050 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:21:19,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:21:19,051 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:19,051 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-24 19:21:19,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:19,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421761346] [2020-09-24 19:21:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:19,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:20,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:20,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 19:21:20,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:20,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:21:20,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:20,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 19:21:20,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 19:21:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:21:20,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:20,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:20,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:20,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:20,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:20,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:20,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:21:20,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:20,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:20,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:20,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:20,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:20,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:20,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:20,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:20,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:21:20,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:20,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 834 [2020-09-24 19:21:20,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:21:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:21:20,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:21,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:21,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:21,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:21,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:21:21,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:21,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-09-24 19:21:21,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 19:21:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:21:21,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:21,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:22,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:22,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:21:22,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:22,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-09-24 19:21:22,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:21:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:21:22,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:22,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:22,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:22,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:22,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:22,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:22,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-09-24 19:21:22,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:22,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:22,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:22,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:22,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:22,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:22,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:23,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:23,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:23,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-24 19:21:23,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:23,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:23,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:23,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:23,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:23,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:23,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-24 19:21:23,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:23,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:23,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:23,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:23,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:23,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:23,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 19:21:23,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:23,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:23,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:23,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:23,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:23,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:23,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:23,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 19:21:23,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:23,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:23,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:23,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:23,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:23,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:23,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:23,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:23,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:23,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 19:21:23,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:23,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:23,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:23,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:24,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:24,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:24,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:24,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:21:24,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:24,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:24,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:24,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:24,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:24,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:24,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:21:24,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:24,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-24 19:21:24,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421761346] [2020-09-24 19:21:24,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:24,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 19:21:24,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127827077] [2020-09-24 19:21:24,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 19:21:24,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:24,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 19:21:24,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-24 19:21:24,191 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-24 19:21:24,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:24,882 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-24 19:21:24,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 19:21:24,882 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-24 19:21:24,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:24,887 INFO L225 Difference]: With dead ends: 67 [2020-09-24 19:21:24,887 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 19:21:24,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 19:21:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 19:21:24,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-24 19:21:24,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 19:21:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-24 19:21:24,902 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-24 19:21:24,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:24,903 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-24 19:21:24,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 19:21:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-24 19:21:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-24 19:21:24,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:24,908 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:21:24,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:21:24,908 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:24,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:24,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-24 19:21:24,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:24,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529543605] [2020-09-24 19:21:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:24,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:25,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:25,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-24 19:21:25,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:25,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:21:25,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:25,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 19:21:25,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 19:21:25,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 19:21:25,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:25,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:25,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:25,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:25,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:25,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:25,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:25,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:25,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:26,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:26,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:26,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 19:21:26,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-09-24 19:21:26,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:26,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 19:21:26,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:26,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:21:26,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:27,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:27,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:27,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:27,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:21:27,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:27,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 789 [2020-09-24 19:21:27,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:21:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:21:27,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:27,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:28,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:28,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:21:28,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:28,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-09-24 19:21:28,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 19:21:28,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:28,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:21:28,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:28,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:28,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:29,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:29,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:21:29,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:29,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-09-24 19:21:29,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:21:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:21:29,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:29,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:29,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:29,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:29,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:29,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-24 19:21:29,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:29,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:29,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:29,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:29,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:29,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:29,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:29,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:29,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:29,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-24 19:21:29,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:29,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:29,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:30,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:30,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:30,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:30,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-24 19:21:30,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:30,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:30,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:30,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:30,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:30,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:30,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:30,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:30,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:30,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:30,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 19:21:30,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:30,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:30,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:30,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:30,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:30,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:30,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:30,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:30,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 19:21:30,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:30,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:30,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:30,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:30,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:30,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:30,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:30,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 19:21:30,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:30,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:30,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:30,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:30,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:30,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:30,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:30,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:30,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:30,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:30,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:21:30,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:30,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:30,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:30,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:30,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:30,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:30,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:30,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:30,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:30,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:21:30,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-24 19:21:30,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529543605] [2020-09-24 19:21:30,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:30,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 19:21:30,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045758277] [2020-09-24 19:21:30,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 19:21:30,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:30,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 19:21:30,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-24 19:21:30,837 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-24 19:21:31,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:31,658 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-24 19:21:31,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-24 19:21:31,659 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-24 19:21:31,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:31,660 INFO L225 Difference]: With dead ends: 71 [2020-09-24 19:21:31,661 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 19:21:31,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 19:21:31,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 19:21:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 19:21:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 19:21:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-24 19:21:31,668 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-24 19:21:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:31,668 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-24 19:21:31,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 19:21:31,668 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-24 19:21:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-24 19:21:31,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:31,669 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:21:31,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 19:21:31,670 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:31,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:31,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-24 19:21:31,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:31,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934181859] [2020-09-24 19:21:31,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:31,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:32,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:32,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 19:21:32,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:32,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:21:32,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 19:21:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 19:21:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 19:21:32,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:32,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:32,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:32,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:32,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:32,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:32,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:32,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:33,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:33,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 19:21:33,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:33,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:21:33,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 19:21:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 19:21:33,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:33,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:33,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:34,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:34,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 19:21:34,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:34,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 970 [2020-09-24 19:21:34,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 19:21:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:21:34,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:34,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:35,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:35,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:21:35,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:35,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-09-24 19:21:35,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:21:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:21:35,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:35,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:35,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:36,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:36,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:21:36,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:36,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-09-24 19:21:36,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 19:21:36,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:36,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:21:36,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:36,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:36,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:36,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:36,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:21:36,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:36,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-24 19:21:36,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:21:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:21:36,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:36,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:36,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:37,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:37,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:37,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:37,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-24 19:21:37,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:37,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:37,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:37,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:37,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:37,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:37,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-24 19:21:37,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:37,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:37,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:37,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:37,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:37,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:37,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:37,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-24 19:21:37,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:37,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:37,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:37,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:38,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:38,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:38,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 19:21:38,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:38,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:38,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:38,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:38,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:38,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:38,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:38,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 19:21:38,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:38,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:38,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:38,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:38,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:38,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:38,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 19:21:38,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:38,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:38,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:38,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:38,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:38,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:38,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 19:21:38,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:38,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:38,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:38,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:38,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:38,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:21:38,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-24 19:21:38,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934181859] [2020-09-24 19:21:38,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:38,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-24 19:21:38,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314388260] [2020-09-24 19:21:38,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-24 19:21:38,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:38,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-24 19:21:38,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-24 19:21:38,739 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-24 19:21:39,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:39,753 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-24 19:21:39,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-24 19:21:39,753 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-24 19:21:39,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:39,754 INFO L225 Difference]: With dead ends: 75 [2020-09-24 19:21:39,754 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 19:21:39,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 19:21:39,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 19:21:39,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-24 19:21:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 19:21:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-24 19:21:39,770 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-24 19:21:39,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:39,770 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-24 19:21:39,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-24 19:21:39,770 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-24 19:21:39,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 19:21:39,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:39,772 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:21:39,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 19:21:39,772 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:39,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:39,773 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-24 19:21:39,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:39,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813362905] [2020-09-24 19:21:39,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:39,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:40,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:40,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 19:21:40,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:40,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:21:40,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 19:21:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 19:21:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 19:21:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:40,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:40,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:40,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:40,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:40,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:40,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:40,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:40,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:40,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:40,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:40,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:40,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:41,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:41,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 19:21:41,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:41,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:21:41,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 19:21:41,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:41,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 19:21:41,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:41,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:41,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:42,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:42,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 19:21:42,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:21:42,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 19:21:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 19:21:42,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:43,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:44,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:44,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 19:21:44,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:44,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:21:44,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 19:21:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:21:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:44,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:44,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:44,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:21:44,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:44,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-09-24 19:21:44,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:21:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:21:44,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:44,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:44,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:45,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:45,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:21:45,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-09-24 19:21:45,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 19:21:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:21:45,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:45,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:45,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:46,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:46,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:21:46,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-09-24 19:21:46,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:21:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:21:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:46,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:46,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:46,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:46,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 19:21:46,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:46,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-24 19:21:46,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:46,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:21:46,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:46,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:21:46,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:46,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:46,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:46,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:46,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 19:21:46,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:46,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-24 19:21:46,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:46,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:21:46,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:46,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:21:46,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:46,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:46,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:47,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:47,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:21:47,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:47,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-24 19:21:47,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:21:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:21:47,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:47,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:47,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:47,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:47,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:21:47,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:47,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-24 19:21:47,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:47,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 19:21:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:21:47,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:47,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:47,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:47,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:47,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:21:47,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:47,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 19:21:47,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:21:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:21:47,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:21:47,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:47,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:47,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:47,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:21:47,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:47,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 19:21:47,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:47,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:21:47,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:47,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:21:47,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:47,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:47,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:47,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:47,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:21:47,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:47,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 19:21:47,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:47,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:21:47,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:47,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:21:47,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:47,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:47,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:47,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:47,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:21:47,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:47,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:21:47,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:21:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:21:47,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-24 19:21:47,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813362905] [2020-09-24 19:21:47,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:21:47,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-24 19:21:47,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772128167] [2020-09-24 19:21:47,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-24 19:21:47,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:21:47,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-24 19:21:47,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-24 19:21:47,960 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-24 19:21:49,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:21:49,032 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-24 19:21:49,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-24 19:21:49,033 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-24 19:21:49,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:21:49,034 INFO L225 Difference]: With dead ends: 79 [2020-09-24 19:21:49,035 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 19:21:49,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 19:21:49,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 19:21:49,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 19:21:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 19:21:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-24 19:21:49,043 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-24 19:21:49,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:21:49,044 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-24 19:21:49,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-24 19:21:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-24 19:21:49,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-24 19:21:49,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:21:49,045 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:21:49,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 19:21:49,046 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:21:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:21:49,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-24 19:21:49,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:21:49,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62489448] [2020-09-24 19:21:49,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:21:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:49,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:50,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:50,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 19:21:50,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:50,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:21:50,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 19:21:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-24 19:21:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:21:50,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:50,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:21:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:50,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:50,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:50,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:21:50,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:50,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:21:50,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:21:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:21:50,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:50,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 19:21:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:50,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:21:51,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:21:51,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-24 19:21:51,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:21:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:21:51,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:21:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 19:21:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:21:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-24 19:21:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:21:51,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:21:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:21:51,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking...