/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:18:07,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:18:07,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:18:07,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:18:07,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:18:07,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:18:07,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:18:08,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:18:08,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:18:08,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:18:08,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:18:08,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:18:08,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:18:08,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:18:08,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:18:08,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:18:08,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:18:08,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:18:08,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:18:08,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:18:08,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:18:08,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:18:08,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:18:08,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:18:08,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:18:08,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:18:08,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:18:08,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:18:08,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:18:08,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:18:08,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:18:08,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:18:08,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:18:08,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:18:08,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:18:08,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:18:08,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:18:08,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:18:08,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:18:08,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:18:08,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:18:08,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:18:08,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:18:08,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:18:08,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:18:08,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:18:08,063 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:18:08,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:18:08,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:18:08,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:18:08,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:18:08,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:18:08,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:18:08,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:18:08,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:18:08,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:18:08,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:18:08,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:18:08,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:18:08,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:18:08,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:18:08,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:18:08,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:18:08,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:18:08,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:18:08,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:18:08,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:18:08,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:18:08,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:18:08,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:18:08,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:18:08,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:18:08,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:18:08,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:18:08,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:18:08,678 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:18:08,679 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:18:08,680 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-2.c [2020-09-25 04:18:08,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fbec82bf/2f45fa4a4a2448ff9d5b6a035f571f84/FLAGc67589922 [2020-09-25 04:18:09,256 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:18:09,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_10-2.c [2020-09-25 04:18:09,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fbec82bf/2f45fa4a4a2448ff9d5b6a035f571f84/FLAGc67589922 [2020-09-25 04:18:09,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fbec82bf/2f45fa4a4a2448ff9d5b6a035f571f84 [2020-09-25 04:18:09,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:18:09,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:18:09,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:18:09,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:18:09,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:18:09,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09, skipping insertion in model container [2020-09-25 04:18:09,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:18:09,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:18:09,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:18:09,971 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:18:09,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:18:10,004 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:18:10,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:10 WrapperNode [2020-09-25 04:18:10,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:18:10,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:18:10,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:18:10,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:18:10,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:10" (1/1) ... [2020-09-25 04:18:10,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:10" (1/1) ... [2020-09-25 04:18:10,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:10" (1/1) ... [2020-09-25 04:18:10,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:10" (1/1) ... [2020-09-25 04:18:10,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:10" (1/1) ... [2020-09-25 04:18:10,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:10" (1/1) ... [2020-09-25 04:18:10,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:10" (1/1) ... [2020-09-25 04:18:10,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:18:10,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:18:10,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:18:10,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:18:10,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:18:10,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:18:10,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:18:10,215 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 04:18:10,215 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 04:18:10,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:18:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:18:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:18:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 04:18:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 04:18:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:18:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:18:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:18:10,465 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:18:10,466 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:18:10,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:18:10 BoogieIcfgContainer [2020-09-25 04:18:10,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:18:10,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:18:10,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:18:10,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:18:10,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:18:09" (1/3) ... [2020-09-25 04:18:10,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfca7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:18:10, skipping insertion in model container [2020-09-25 04:18:10,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:10" (2/3) ... [2020-09-25 04:18:10,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfca7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:18:10, skipping insertion in model container [2020-09-25 04:18:10,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:18:10" (3/3) ... [2020-09-25 04:18:10,482 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10-2.c [2020-09-25 04:18:10,498 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:18:10,510 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:18:10,539 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:18:10,577 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:18:10,577 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:18:10,577 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:18:10,577 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:18:10,577 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:18:10,578 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:18:10,578 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:18:10,578 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:18:10,610 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 04:18:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 04:18:10,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:10,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:10,623 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:10,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:10,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 04:18:10,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:10,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620222805] [2020-09-25 04:18:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:10,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:10,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:11,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:18:11,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:11,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 04:18:11,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:11,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:18:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:18:11,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:11,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:11,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:11,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:11,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:11,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:11,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:11,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:11,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:11,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:18:11,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:11,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:18:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:18:11,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:18:11,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620222805] [2020-09-25 04:18:11,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:11,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:18:11,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054727366] [2020-09-25 04:18:11,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:18:11,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:11,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:18:11,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:18:11,191 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 04:18:11,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:11,289 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 04:18:11,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:18:11,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 04:18:11,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:11,306 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:18:11,306 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 04:18:11,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:18:11,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 04:18:11,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 04:18:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:18:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:18:11,372 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 04:18:11,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:11,373 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:18:11,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:18:11,373 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:18:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 04:18:11,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:11,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:11,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:18:11,377 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:11,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:11,377 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 04:18:11,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:11,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525203274] [2020-09-25 04:18:11,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:11,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:18:11,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:11,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 04:18:11,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:11,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:11,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:11,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:11,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:11,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:11,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:11,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:11,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:11,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:11,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:11,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:11,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:18:11,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:11,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:11,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:18:11,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525203274] [2020-09-25 04:18:11,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:11,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:18:11,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546704102] [2020-09-25 04:18:11,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:18:11,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:11,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:18:11,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:18:11,668 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 04:18:11,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:11,739 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 04:18:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:18:11,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 04:18:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:11,742 INFO L225 Difference]: With dead ends: 50 [2020-09-25 04:18:11,742 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 04:18:11,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:18:11,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 04:18:11,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 04:18:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:18:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:18:11,754 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 04:18:11,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:11,755 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:18:11,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:18:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:18:11,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 04:18:11,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:11,757 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:11,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:18:11,758 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:11,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:11,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 04:18:11,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:11,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058822849] [2020-09-25 04:18:11,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:12,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:13,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:18:13,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:18:13,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1915 [2020-09-25 04:18:13,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:13,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:13,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:13,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:13,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:18:13,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:18:13,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:13,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:13,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:13,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:13,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:13,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:13,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:13,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:13,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 04:18:13,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:13,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:13,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:18:13,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 04:18:13,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:13,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:13,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:13,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:18:13,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:13,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:14,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:14,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:18:14,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:14,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:14,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:14,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:14,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:14,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:14,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:18:14,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:14,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:14,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:18:14,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058822849] [2020-09-25 04:18:14,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:14,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:18:14,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194112481] [2020-09-25 04:18:14,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:18:14,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:14,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:18:14,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:14,075 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 04:18:14,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:14,210 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 04:18:14,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:18:14,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 04:18:14,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:14,214 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:18:14,214 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 04:18:14,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:18:14,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 04:18:14,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 04:18:14,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:18:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 04:18:14,226 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 04:18:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:14,227 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 04:18:14,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:18:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 04:18:14,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 04:18:14,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:14,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:14,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:18:14,230 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:14,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:14,230 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 04:18:14,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:14,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398068287] [2020-09-25 04:18:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:14,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:16,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:18:16,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:18:16,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1877 [2020-09-25 04:18:16,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:16,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:16,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:16,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:16,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:18:16,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:16,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:16,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:16,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:16,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:16,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:16,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:16,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:16,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:16,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:16,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:18:16,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:18:16,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-25 04:18:16,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:16,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:18:16,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:16,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:16,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:16,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:16,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:16,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:18:16,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:16,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:18:16,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:16,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:18:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:16,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:16,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:16,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:18:16,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:16,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:16,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:16,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:18:16,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398068287] [2020-09-25 04:18:16,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:16,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:18:16,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104022865] [2020-09-25 04:18:16,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:18:16,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:16,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:18:16,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:16,790 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 04:18:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:16,976 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 04:18:16,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:18:16,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 04:18:16,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:16,981 INFO L225 Difference]: With dead ends: 72 [2020-09-25 04:18:16,981 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 04:18:16,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:18:16,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 04:18:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 04:18:16,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 04:18:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 04:18:16,999 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 04:18:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:16,999 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 04:18:16,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:18:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 04:18:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 04:18:17,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:17,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:17,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:18:17,008 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:17,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:17,008 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 04:18:17,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:17,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463067178] [2020-09-25 04:18:17,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:17,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:17,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:17,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:17,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:20,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:22,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:18:22,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:18:22,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:18:22,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:22,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:18:22,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:22,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:22,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:22,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:22,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:22,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:22,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:22,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:22,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:22,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:22,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:22,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:25,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:18:25,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:18:25,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3153 [2020-09-25 04:18:25,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:25,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:18:25,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:25,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:25,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:25,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:25,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:25,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 04:18:25,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:25,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:18:25,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:25,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:25,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:25,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:25,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:25,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:25,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:25,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:25,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:18:25,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:25,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:25,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:25,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:25,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:25,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:25,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:25,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:25,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:25,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:25,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:18:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:25,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:25,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:25,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:18:25,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:25,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:18:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 04:18:25,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463067178] [2020-09-25 04:18:25,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:25,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:18:25,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138723993] [2020-09-25 04:18:25,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:18:25,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:25,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:18:25,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:25,500 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 04:18:25,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:25,699 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 04:18:25,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:18:25,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 04:18:25,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:25,704 INFO L225 Difference]: With dead ends: 64 [2020-09-25 04:18:25,704 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 04:18:25,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:18:25,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 04:18:25,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 04:18:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:18:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 04:18:25,724 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 04:18:25,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:25,725 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 04:18:25,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:18:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 04:18:25,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 04:18:25,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:25,731 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:25,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:18:25,731 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:25,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 04:18:25,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:25,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100382879] [2020-09-25 04:18:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:25,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:26,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:26,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:26,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:30,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:18:30,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:18:30,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:18:30,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:30,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:18:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:30,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:30,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:30,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:30,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:30,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:30,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:30,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:30,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:30,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:30,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:30,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:30,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:30,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:31,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 04:18:35,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:18:35,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:18:35,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:18:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:35,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:35,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:35,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:35,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:35,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:18:35,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:18:35,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:35,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:35,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:35,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:35,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:35,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:18:35,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:35,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:35,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:35,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:35,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:35,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:35,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:18:35,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:35,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:18:35,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:35,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:35,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:18:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:35,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:35,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 04:18:35,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 04:18:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:35,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:35,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:35,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:35,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:35,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:35,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:35,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:35,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:35,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:35,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:35,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:35,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:35,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 04:18:35,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100382879] [2020-09-25 04:18:35,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:35,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:18:35,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339242043] [2020-09-25 04:18:35,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:18:35,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:35,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:18:35,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:18:35,964 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 6 states. [2020-09-25 04:18:36,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:36,075 INFO L93 Difference]: Finished difference Result 98 states and 128 transitions. [2020-09-25 04:18:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:18:36,076 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 04:18:36,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:36,078 INFO L225 Difference]: With dead ends: 98 [2020-09-25 04:18:36,078 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 04:18:36,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:36,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 04:18:36,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-09-25 04:18:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 04:18:36,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-09-25 04:18:36,096 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 67 [2020-09-25 04:18:36,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:36,097 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-09-25 04:18:36,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:18:36,099 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-09-25 04:18:36,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 04:18:36,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:36,104 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:36,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:18:36,105 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:36,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:36,105 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 04:18:36,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:36,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518459688] [2020-09-25 04:18:36,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:36,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:36,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:36,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:37,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:38,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:38,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:40,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:40,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:41,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:41,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:18:41,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:18:41,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:18:41,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:41,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:18:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 04:18:41,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:41,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:41,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:41,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:41,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:41,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:41,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:41,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:41,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:41,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:41,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:41,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:41,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:41,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:42,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:44,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:45,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:46,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:18:46,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:18:46,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:18:46,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:46,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:46,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:18:46,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:46,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 04:18:46,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:46,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:18:46,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:46,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 04:18:46,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:46,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:18:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:18:46,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:46,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:46,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:46,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:46,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:46,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:18:46,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:46,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:18:46,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:46,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:18:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:46,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:46,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:46,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:46,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:46,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:46,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:18:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:46,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:46,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:18:46,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:46,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:18:46,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:46,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:18:46,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:46,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:46,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:46,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:46,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:46,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:46,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:46,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:46,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:46,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:46,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:46,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:46,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:18:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:46,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:46,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:46,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:46,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:46,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 04:18:46,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518459688] [2020-09-25 04:18:46,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:46,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:18:46,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240620410] [2020-09-25 04:18:46,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:18:46,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:46,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:18:46,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:18:46,528 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 8 states. [2020-09-25 04:18:46,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:46,697 INFO L93 Difference]: Finished difference Result 90 states and 119 transitions. [2020-09-25 04:18:46,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:18:46,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-25 04:18:46,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:46,700 INFO L225 Difference]: With dead ends: 90 [2020-09-25 04:18:46,700 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 04:18:46,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:18:46,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 04:18:46,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2020-09-25 04:18:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 04:18:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2020-09-25 04:18:46,714 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 69 [2020-09-25 04:18:46,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:46,715 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2020-09-25 04:18:46,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:18:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2020-09-25 04:18:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 04:18:46,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:46,717 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:46,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:18:46,717 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:46,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:46,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 04:18:46,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:46,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38888000] [2020-09-25 04:18:46,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:46,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:47,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:47,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:47,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:48,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:51,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 04:18:51,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:18:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:18:51,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:51,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 04:18:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:51,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:51,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:51,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:51,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:51,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:51,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:51,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:51,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:51,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:52,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:52,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:52,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:52,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:52,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:53,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:53,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:56,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 04:18:56,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 04:18:56,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:18:56,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:56,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:56,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:56,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:18:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:56,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:56,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:56,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:18:57,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:18:57,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-09-25 04:18:57,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:18:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:57,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:57,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:57,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:57,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:18:57,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:18:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:57,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:57,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:57,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:57,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:57,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:57,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:57,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:57,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:57,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:18:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:57,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:57,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:18:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:57,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:57,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:57,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:18:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:57,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 04:18:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:18:58,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:18:58,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-09-25 04:18:58,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 04:18:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:58,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:58,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:58,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:58,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 04:18:58,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:58,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:58,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:58,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:58,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:58,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:58,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:58,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:58,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:58,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:58,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:58,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:18:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:58,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:58,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:58,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:58,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:58,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 17 proven. 43 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 04:18:58,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38888000] [2020-09-25 04:18:58,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:58,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:18:58,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635571902] [2020-09-25 04:18:58,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:18:58,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:58,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:18:58,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:18:58,172 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand 6 states. [2020-09-25 04:18:58,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:58,261 INFO L93 Difference]: Finished difference Result 142 states and 205 transitions. [2020-09-25 04:18:58,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:18:58,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-09-25 04:18:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:58,265 INFO L225 Difference]: With dead ends: 142 [2020-09-25 04:18:58,265 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 04:18:58,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 04:18:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-09-25 04:18:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 04:18:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2020-09-25 04:18:58,280 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 101 [2020-09-25 04:18:58,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:58,281 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2020-09-25 04:18:58,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:18:58,281 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2020-09-25 04:18:58,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 04:18:58,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:58,283 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:58,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:18:58,283 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:58,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:58,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1745594584, now seen corresponding path program 1 times [2020-09-25 04:18:58,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:58,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161375139] [2020-09-25 04:18:58,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:01,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:01,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:01,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking...