/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:31,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:31,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:32,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:32,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:32,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:32,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:32,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:32,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:32,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:32,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:32,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:32,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:32,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:32,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:32,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:32,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:32,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:32,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:32,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:32,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:32,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:32,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:32,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:32,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:32,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:32,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:32,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:32,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:32,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:32,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:32,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:32,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:32,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:32,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:32,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:32,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:32,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:32,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:32,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:32,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:32,048 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 09:05:32,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:32,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:32,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:32,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:32,101 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:32,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:32,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:32,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:32,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:32,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:32,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:32,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:32,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:32,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:32,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:32,103 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:32,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:32,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:32,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:32,104 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:32,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:32,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:32,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:32,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:32,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:32,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:32,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:32,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:32,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:32,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:05:32,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:32,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:32,618 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:32,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:32,621 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:32,622 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 09:05:32,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b506b631d/8b38e8a3847c4546abf8e10d628e06f6/FLAG41e6d015d [2020-09-25 09:05:33,292 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:33,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 09:05:33,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b506b631d/8b38e8a3847c4546abf8e10d628e06f6/FLAG41e6d015d [2020-09-25 09:05:33,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b506b631d/8b38e8a3847c4546abf8e10d628e06f6 [2020-09-25 09:05:33,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:33,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:33,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:33,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:33,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:33,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:33" (1/1) ... [2020-09-25 09:05:33,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:33, skipping insertion in model container [2020-09-25 09:05:33,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:33" (1/1) ... [2020-09-25 09:05:33,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:33,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:34,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:34,166 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:34,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:34,390 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:34,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:34 WrapperNode [2020-09-25 09:05:34,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:34,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:34,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:34,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:34,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:34" (1/1) ... [2020-09-25 09:05:34,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:34" (1/1) ... [2020-09-25 09:05:34,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:34" (1/1) ... [2020-09-25 09:05:34,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:34" (1/1) ... [2020-09-25 09:05:34,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:34" (1/1) ... [2020-09-25 09:05:34,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:34" (1/1) ... [2020-09-25 09:05:34,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:34" (1/1) ... [2020-09-25 09:05:34,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:34,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:34,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:34,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:34,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:34" (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 09:05:34,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:34,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:34,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:34,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:36,133 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:36,134 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:36,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:36 BoogieIcfgContainer [2020-09-25 09:05:36,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:36,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:36,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:36,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:36,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:33" (1/3) ... [2020-09-25 09:05:36,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:36, skipping insertion in model container [2020-09-25 09:05:36,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:34" (2/3) ... [2020-09-25 09:05:36,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:36, skipping insertion in model container [2020-09-25 09:05:36,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:36" (3/3) ... [2020-09-25 09:05:36,153 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label31.c [2020-09-25 09:05:36,166 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:36,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:36,201 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:36,236 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:36,236 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:36,236 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:36,236 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:36,237 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:36,237 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:36,237 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:36,237 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:36,269 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 09:05:36,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:36,281 INFO L422 BasicCegarLoop]: trace histogram [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, 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 09:05:36,282 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:36,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:36,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1703669257, now seen corresponding path program 1 times [2020-09-25 09:05:36,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:36,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67031033] [2020-09-25 09:05:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:36,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:36,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:36,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:37,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:37,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 09:05:37,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:05:37,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1147 [2020-09-25 09:05:37,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:37,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:05:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 09:05:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:05:37,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:37,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:37,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:37,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:37,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:37,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:05:37,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:37,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:05:37,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:37,818 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 09:05:37,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67031033] [2020-09-25 09:05:37,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:37,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:05:37,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432566612] [2020-09-25 09:05:37,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:05:37,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:37,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:05:37,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:05:37,861 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:05:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:40,068 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 09:05:40,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:05:40,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 09:05:40,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:40,095 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 09:05:40,095 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 09:05:40,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:05:40,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 09:05:40,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 09:05:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 09:05:40,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 09:05:40,208 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 62 [2020-09-25 09:05:40,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:40,209 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 09:05:40,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:05:40,209 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 09:05:40,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 09:05:40,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:40,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 09:05:40,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:05:40,218 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:40,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:40,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1996719641, now seen corresponding path program 1 times [2020-09-25 09:05:40,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:40,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148312935] [2020-09-25 09:05:40,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:44,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:44,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 09:05:44,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:44,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3885 [2020-09-25 09:05:44,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:44,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 09:05:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:44,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:44,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:44,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:44,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:44,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:44,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:05:44,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:44,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:44,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:44,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:05:44,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:44,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:44,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:44,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:05:44,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:44,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 09:05:44,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:44,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:05:44,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:44,680 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:05:44,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148312935] [2020-09-25 09:05:44,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:44,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:44,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020270836] [2020-09-25 09:05:44,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:44,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:44,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:44,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:44,691 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 09:05:46,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:46,420 INFO L93 Difference]: Finished difference Result 1226 states and 1532 transitions. [2020-09-25 09:05:46,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:05:46,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-09-25 09:05:46,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:46,429 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 09:05:46,429 INFO L226 Difference]: Without dead ends: 697 [2020-09-25 09:05:46,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-09-25 09:05:46,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2020-09-25 09:05:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 09:05:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 09:05:46,469 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 141 [2020-09-25 09:05:46,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:46,470 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 09:05:46,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 09:05:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 09:05:46,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:46,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:46,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:05:46,479 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:46,479 INFO L82 PathProgramCache]: Analyzing trace with hash -617946683, now seen corresponding path program 1 times [2020-09-25 09:05:46,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:46,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142813171] [2020-09-25 09:05:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:51,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:51,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 09:05:51,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:05:51,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 09:05:51,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:51,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:51,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:51,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:05:51,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 09:05:51,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:51,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:51,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:51,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:51,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:51,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:51,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:05:51,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:51,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:51,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:51,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:51,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:51,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:51,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:51,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:51,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 09:05:51,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:51,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:51,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:51,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:51,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:51,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:51,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142813171] [2020-09-25 09:05:51,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:51,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:51,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684673755] [2020-09-25 09:05:51,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:51,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:51,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:51,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:51,902 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 6 states. [2020-09-25 09:05:54,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:54,753 INFO L93 Difference]: Finished difference Result 1909 states and 2489 transitions. [2020-09-25 09:05:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:05:54,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-09-25 09:05:54,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:54,763 INFO L225 Difference]: With dead ends: 1909 [2020-09-25 09:05:54,763 INFO L226 Difference]: Without dead ends: 1379 [2020-09-25 09:05:54,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2020-09-25 09:05:54,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1323. [2020-09-25 09:05:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-09-25 09:05:54,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1703 transitions. [2020-09-25 09:05:54,820 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1703 transitions. Word has length 151 [2020-09-25 09:05:54,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:54,821 INFO L479 AbstractCegarLoop]: Abstraction has 1323 states and 1703 transitions. [2020-09-25 09:05:54,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:54,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1703 transitions. [2020-09-25 09:05:54,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 09:05:54,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:54,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:54,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:54,827 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:54,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:54,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1755229107, now seen corresponding path program 1 times [2020-09-25 09:05:54,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:54,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508383747] [2020-09-25 09:05:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:54,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:54,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:56,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:56,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 09:05:56,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:05:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2068 [2020-09-25 09:05:56,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:56,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:05:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 09:05:56,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:56,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:56,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:57,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:57,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:57,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:05:57,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:57,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:05:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:57,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:57,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:57,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 09:05:57,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 09:05:57,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:57,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:05:57,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:57,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508383747] [2020-09-25 09:05:57,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:57,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:05:57,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359067755] [2020-09-25 09:05:57,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:05:57,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:57,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:05:57,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:57,346 INFO L87 Difference]: Start difference. First operand 1323 states and 1703 transitions. Second operand 7 states. [2020-09-25 09:05:59,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:59,726 INFO L93 Difference]: Finished difference Result 3329 states and 4521 transitions. [2020-09-25 09:05:59,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:05:59,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-09-25 09:05:59,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:59,748 INFO L225 Difference]: With dead ends: 3329 [2020-09-25 09:05:59,749 INFO L226 Difference]: Without dead ends: 2171 [2020-09-25 09:05:59,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:05:59,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2020-09-25 09:05:59,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1813. [2020-09-25 09:05:59,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2020-09-25 09:05:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2264 transitions. [2020-09-25 09:05:59,872 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2264 transitions. Word has length 153 [2020-09-25 09:05:59,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:59,872 INFO L479 AbstractCegarLoop]: Abstraction has 1813 states and 2264 transitions. [2020-09-25 09:05:59,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:05:59,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2264 transitions. [2020-09-25 09:05:59,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-25 09:05:59,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:59,881 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 09:05:59,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:59,882 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:59,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:59,882 INFO L82 PathProgramCache]: Analyzing trace with hash 100721030, now seen corresponding path program 1 times [2020-09-25 09:05:59,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:59,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98588452] [2020-09-25 09:05:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:59,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:01,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:01,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:03,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-25 09:06:03,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:03,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3943 [2020-09-25 09:06:03,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:03,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:03,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:03,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 09:06:03,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 09:06:03,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:03,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:03,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:03,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:03,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:03,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:06:03,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:03,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:03,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:03,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:04,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:04,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:04,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:04,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 09:06:04,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:04,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 09:06:04,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:04,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:06:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:04,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:04,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 09:06:04,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:04,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 09:06:04,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:04,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 09:06:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 115 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:06:04,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98588452] [2020-09-25 09:06:04,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:04,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:06:04,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721743712] [2020-09-25 09:06:04,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:04,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:04,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:04,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:04,422 INFO L87 Difference]: Start difference. First operand 1813 states and 2264 transitions. Second operand 7 states. [2020-09-25 09:06:07,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:07,057 INFO L93 Difference]: Finished difference Result 4285 states and 5645 transitions. [2020-09-25 09:06:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:06:07,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-09-25 09:06:07,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:07,077 INFO L225 Difference]: With dead ends: 4285 [2020-09-25 09:06:07,078 INFO L226 Difference]: Without dead ends: 2637 [2020-09-25 09:06:07,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:06:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2020-09-25 09:06:07,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2301. [2020-09-25 09:06:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2301 states. [2020-09-25 09:06:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 2831 transitions. [2020-09-25 09:06:07,166 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 2831 transitions. Word has length 252 [2020-09-25 09:06:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:07,167 INFO L479 AbstractCegarLoop]: Abstraction has 2301 states and 2831 transitions. [2020-09-25 09:06:07,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 2831 transitions. [2020-09-25 09:06:07,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 09:06:07,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:07,173 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:07,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:06:07,174 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:07,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:07,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1455418807, now seen corresponding path program 1 times [2020-09-25 09:06:07,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:07,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967820054] [2020-09-25 09:06:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:07,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:08,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:12,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:12,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 09:06:12,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:12,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 09:06:12,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:12,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 09:06:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 09:06:12,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:12,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:12,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:12,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:12,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:12,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:12,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:06:12,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:12,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:12,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:12,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:12,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:12,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:12,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:12,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:12,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 09:06:12,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:12,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:06:12,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:12,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:06:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:12,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:12,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 09:06:12,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 09:06:12,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:12,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 09:06:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:06:12,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967820054] [2020-09-25 09:06:12,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:12,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:06:12,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710302676] [2020-09-25 09:06:12,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:12,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:12,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:12,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:12,760 INFO L87 Difference]: Start difference. First operand 2301 states and 2831 transitions. Second operand 7 states. [2020-09-25 09:06:15,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:15,193 INFO L93 Difference]: Finished difference Result 5425 states and 6928 transitions. [2020-09-25 09:06:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:06:15,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-09-25 09:06:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:15,214 INFO L225 Difference]: With dead ends: 5425 [2020-09-25 09:06:15,214 INFO L226 Difference]: Without dead ends: 2177 [2020-09-25 09:06:15,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:06:15,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2020-09-25 09:06:15,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 2101. [2020-09-25 09:06:15,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2020-09-25 09:06:15,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 2546 transitions. [2020-09-25 09:06:15,290 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 2546 transitions. Word has length 253 [2020-09-25 09:06:15,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:15,291 INFO L479 AbstractCegarLoop]: Abstraction has 2101 states and 2546 transitions. [2020-09-25 09:06:15,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 2546 transitions. [2020-09-25 09:06:15,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-09-25 09:06:15,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:15,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1] [2020-09-25 09:06:15,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:06:15,301 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:15,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:15,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1285871462, now seen corresponding path program 1 times [2020-09-25 09:06:15,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:15,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997409621] [2020-09-25 09:06:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:15,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:15,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:17,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-09-25 09:06:17,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:06:17,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2375 [2020-09-25 09:06:17,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:17,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-09-25 09:06:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 09:06:17,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:17,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:17,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:17,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:17,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:17,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:06:17,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:17,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:17,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:17,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:17,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:17,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:17,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:17,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:17,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 09:06:17,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:17,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 09:06:17,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:17,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 09:06:17,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:17,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-25 09:06:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:18,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:18,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:18,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:18,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 09:06:18,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:18,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 09:06:18,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:18,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 09:06:18,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 147 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:06:18,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997409621] [2020-09-25 09:06:18,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:18,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:06:18,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884568049] [2020-09-25 09:06:18,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:06:18,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:18,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:06:18,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:06:18,310 INFO L87 Difference]: Start difference. First operand 2101 states and 2546 transitions. Second operand 6 states. [2020-09-25 09:06:20,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:20,035 INFO L93 Difference]: Finished difference Result 4676 states and 5933 transitions. [2020-09-25 09:06:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:06:20,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 319 [2020-09-25 09:06:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:20,050 INFO L225 Difference]: With dead ends: 4676 [2020-09-25 09:06:20,050 INFO L226 Difference]: Without dead ends: 2740 [2020-09-25 09:06:20,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:20,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2020-09-25 09:06:20,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2402. [2020-09-25 09:06:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2402 states. [2020-09-25 09:06:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 2888 transitions. [2020-09-25 09:06:20,118 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 2888 transitions. Word has length 319 [2020-09-25 09:06:20,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:20,119 INFO L479 AbstractCegarLoop]: Abstraction has 2402 states and 2888 transitions. [2020-09-25 09:06:20,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:06:20,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 2888 transitions. [2020-09-25 09:06:20,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-25 09:06:20,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:20,130 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2020-09-25 09:06:20,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:06:20,131 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:20,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:20,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1970147949, now seen corresponding path program 1 times [2020-09-25 09:06:20,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:20,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971541359] [2020-09-25 09:06:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:20,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:20,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking...