/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 SequenceOfStatements --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:18:25,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:18:25,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:18:26,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:18:26,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:18:26,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:18:26,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:18:26,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:18:26,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:18:26,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:18:26,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:18:26,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:18:26,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:18:26,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:18:26,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:18:26,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:18:26,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:18:26,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:18:26,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:18:26,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:18:26,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:18:26,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:18:26,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:18:26,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:18:26,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:18:26,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:18:26,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:18:26,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:18:26,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:18:26,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:18:26,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:18:26,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:18:26,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:18:26,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:18:26,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:18:26,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:18:26,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:18:26,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:18:26,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:18:26,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:18:26,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:18:26,046 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 [2020-10-14 22:18:26,068 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:18:26,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:18:26,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:18:26,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:18:26,070 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:18:26,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:18:26,071 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:18:26,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:18:26,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:18:26,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:18:26,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:18:26,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:18:26,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:18:26,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:18:26,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:18:26,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:18:26,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:18:26,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:18:26,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:18:26,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:18:26,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:18:26,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:18:26,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:18:26,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:18:26,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:18:26,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:18:26,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:18:26,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:18:26,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:18:26,075 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 -> SequenceOfStatements 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:18:26,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:18:26,384 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:18:26,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:18:26,393 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:18:26,393 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:18:26,394 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label41.c [2020-10-14 22:18:26,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0093b5741/b50cfd6ee73b421caf37465e892c5c97/FLAG0badc7e31 [2020-10-14 22:18:27,089 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:18:27,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label41.c [2020-10-14 22:18:27,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0093b5741/b50cfd6ee73b421caf37465e892c5c97/FLAG0badc7e31 [2020-10-14 22:18:27,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0093b5741/b50cfd6ee73b421caf37465e892c5c97 [2020-10-14 22:18:27,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:18:27,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:18:27,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:18:27,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:18:27,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:18:27,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:18:27" (1/1) ... [2020-10-14 22:18:27,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92e95d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:27, skipping insertion in model container [2020-10-14 22:18:27,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:18:27" (1/1) ... [2020-10-14 22:18:27,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:18:27,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:18:28,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:18:28,355 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:18:28,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:18:28,932 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:18:28,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:28 WrapperNode [2020-10-14 22:18:28,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:18:28,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:18:28,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:18:28,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:18:28,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:28" (1/1) ... [2020-10-14 22:18:28,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:28" (1/1) ... [2020-10-14 22:18:29,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:28" (1/1) ... [2020-10-14 22:18:29,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:28" (1/1) ... [2020-10-14 22:18:29,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:28" (1/1) ... [2020-10-14 22:18:29,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:28" (1/1) ... [2020-10-14 22:18:29,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:28" (1/1) ... [2020-10-14 22:18:29,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:18:29,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:18:29,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:18:29,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:18:29,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:28" (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 [2020-10-14 22:18:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:18:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:18:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:18:29,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:18:29,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:18:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:18:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:18:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:18:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:18:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:18:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:18:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:18:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:18:33,657 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:18:33,658 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:18:33,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:18:33 BoogieIcfgContainer [2020-10-14 22:18:33,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:18:33,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:18:33,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:18:33,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:18:33,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:18:27" (1/3) ... [2020-10-14 22:18:33,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ef041f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:18:33, skipping insertion in model container [2020-10-14 22:18:33,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:28" (2/3) ... [2020-10-14 22:18:33,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ef041f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:18:33, skipping insertion in model container [2020-10-14 22:18:33,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:18:33" (3/3) ... [2020-10-14 22:18:33,676 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label41.c [2020-10-14 22:18:33,687 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:18:33,696 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:18:33,711 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:18:33,740 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:18:33,741 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:18:33,741 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:18:33,741 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:18:33,741 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:18:33,741 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:18:33,741 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:18:33,742 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:18:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-14 22:18:33,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 22:18:33,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:18:33,780 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] [2020-10-14 22:18:33,780 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:18:33,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:18:33,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1258061494, now seen corresponding path program 1 times [2020-10-14 22:18:33,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:18:33,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294066013] [2020-10-14 22:18:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:18:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:18:33,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:34,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:18:34,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 22:18:34,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:18:34,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-14 22:18:34,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:18:34,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:18:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:18:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:18:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 22:18:34,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:18:34,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:18:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:18:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:34,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:18:34,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:18:34,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:18:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:18:34,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:18:34,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:18:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:18:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:18:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:18:34,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:18:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:18:34,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294066013] [2020-10-14 22:18:34,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:18:34,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:18:34,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088200396] [2020-10-14 22:18:34,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:18:34,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:18:34,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:18:34,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:18:34,503 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-14 22:18:38,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:18:38,192 INFO L93 Difference]: Finished difference Result 1169 states and 2164 transitions. [2020-10-14 22:18:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:18:38,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-14 22:18:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:18:38,229 INFO L225 Difference]: With dead ends: 1169 [2020-10-14 22:18:38,230 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 22:18:38,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:18:38,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 22:18:38,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 692. [2020-10-14 22:18:38,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-14 22:18:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1014 transitions. [2020-10-14 22:18:38,347 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1014 transitions. Word has length 29 [2020-10-14 22:18:38,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:18:38,348 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 1014 transitions. [2020-10-14 22:18:38,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:18:38,348 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1014 transitions. [2020-10-14 22:18:38,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 22:18:38,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:18:38,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:18:38,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:18:38,355 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:18:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:18:38,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1095003254, now seen corresponding path program 1 times [2020-10-14 22:18:38,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:18:38,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226263116] [2020-10-14 22:18:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:18:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:18:38,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:39,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:18:39,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 22:18:39,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:18:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-10-14 22:18:39,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:18:39,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:18:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:18:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:18:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:18:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:18:39,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:18:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:18:39,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:39,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:18:39,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:18:39,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:18:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:18:39,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:18:39,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:18:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:18:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:18:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:18:39,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:18:39,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:18:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:18:39,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:39,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:18:39,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:18:39,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:18:39,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 22:18:39,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:18:39,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:18:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:18:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:18:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:18:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 22:18:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:18:39,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226263116] [2020-10-14 22:18:39,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:18:39,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:18:39,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311853705] [2020-10-14 22:18:39,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:18:39,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:18:39,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:18:39,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:18:39,540 INFO L87 Difference]: Start difference. First operand 692 states and 1014 transitions. Second operand 7 states. [2020-10-14 22:18:43,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:18:43,909 INFO L93 Difference]: Finished difference Result 2090 states and 3101 transitions. [2020-10-14 22:18:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:18:43,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-14 22:18:43,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:18:43,923 INFO L225 Difference]: With dead ends: 2090 [2020-10-14 22:18:43,923 INFO L226 Difference]: Without dead ends: 1404 [2020-10-14 22:18:43,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:18:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-10-14 22:18:43,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1383. [2020-10-14 22:18:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2020-10-14 22:18:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1819 transitions. [2020-10-14 22:18:44,000 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1819 transitions. Word has length 105 [2020-10-14 22:18:44,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:18:44,000 INFO L479 AbstractCegarLoop]: Abstraction has 1383 states and 1819 transitions. [2020-10-14 22:18:44,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:18:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1819 transitions. [2020-10-14 22:18:44,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 22:18:44,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:18:44,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:18:44,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:18:44,006 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:18:44,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:18:44,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1039404189, now seen corresponding path program 1 times [2020-10-14 22:18:44,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:18:44,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074785267] [2020-10-14 22:18:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:18:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:18:44,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:44,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:18:44,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:18:44,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:18:44,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 22:18:44,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:18:44,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:18:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:18:44,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 22:18:44,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 22:18:44,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:18:44,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:18:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:18:44,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:44,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:18:44,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:18:44,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:18:44,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:18:44,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:18:44,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:18:44,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:18:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:18:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:18:44,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:18:44,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:18:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:18:44,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:44,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:18:44,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:18:44,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:18:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 22:18:44,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:18:44,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:18:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:18:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:18:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:18:44,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:18:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:18:44,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074785267] [2020-10-14 22:18:44,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:18:44,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:18:44,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023786109] [2020-10-14 22:18:44,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:18:44,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:18:44,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:18:44,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:18:44,571 INFO L87 Difference]: Start difference. First operand 1383 states and 1819 transitions. Second operand 5 states. [2020-10-14 22:18:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:18:48,533 INFO L93 Difference]: Finished difference Result 3465 states and 4731 transitions. [2020-10-14 22:18:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:18:48,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-14 22:18:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:18:48,547 INFO L225 Difference]: With dead ends: 3465 [2020-10-14 22:18:48,548 INFO L226 Difference]: Without dead ends: 2088 [2020-10-14 22:18:48,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:18:48,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2020-10-14 22:18:48,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 2082. [2020-10-14 22:18:48,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2082 states. [2020-10-14 22:18:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2629 transitions. [2020-10-14 22:18:48,609 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2629 transitions. Word has length 120 [2020-10-14 22:18:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:18:48,610 INFO L479 AbstractCegarLoop]: Abstraction has 2082 states and 2629 transitions. [2020-10-14 22:18:48,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:18:48,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2629 transitions. [2020-10-14 22:18:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 22:18:48,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:18:48,616 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, 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, 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] [2020-10-14 22:18:48,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:18:48,616 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:18:48,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:18:48,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1547059085, now seen corresponding path program 1 times [2020-10-14 22:18:48,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:18:48,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542999221] [2020-10-14 22:18:48,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:18:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:18:48,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:48,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:53,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:18:53,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 22:18:53,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:18:53,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 22:18:53,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:18:53,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:18:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:18:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 22:18:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 22:18:53,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:18:53,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:18:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:18:53,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:53,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:18:53,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:18:53,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:18:53,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:18:53,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:18:53,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:18:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:18:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:18:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:18:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:18:53,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:18:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:18:53,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:53,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:18:53,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:18:53,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:18:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 22:18:53,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:18:53,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:18:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:18:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:18:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 22:18:53,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:18:53,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 22:18:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:18:54,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:54,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:18:54,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:18:54,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:18:54,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 22:18:54,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:18:54,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:18:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:18:54,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:18:54,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:18:54,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:18:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:18:54,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542999221] [2020-10-14 22:18:54,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:18:54,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:18:54,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078052905] [2020-10-14 22:18:54,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:18:54,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:18:54,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:18:54,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:18:54,514 INFO L87 Difference]: Start difference. First operand 2082 states and 2629 transitions. Second operand 7 states. [2020-10-14 22:18:59,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:18:59,665 INFO L93 Difference]: Finished difference Result 5262 states and 6944 transitions. [2020-10-14 22:18:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:18:59,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-14 22:18:59,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:18:59,684 INFO L225 Difference]: With dead ends: 5262 [2020-10-14 22:18:59,685 INFO L226 Difference]: Without dead ends: 3186 [2020-10-14 22:18:59,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:18:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2020-10-14 22:18:59,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 3135. [2020-10-14 22:18:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3135 states. [2020-10-14 22:18:59,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 3758 transitions. [2020-10-14 22:18:59,779 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 3758 transitions. Word has length 258 [2020-10-14 22:18:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:18:59,781 INFO L479 AbstractCegarLoop]: Abstraction has 3135 states and 3758 transitions. [2020-10-14 22:18:59,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:18:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 3758 transitions. [2020-10-14 22:18:59,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-14 22:18:59,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:18:59,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:18:59,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:18:59,786 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:18:59,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:18:59,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1264578241, now seen corresponding path program 1 times [2020-10-14 22:18:59,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:18:59,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477199048] [2020-10-14 22:18:59,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:18:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:18:59,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:18:59,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:01,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:02,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:02,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-14 22:19:02,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:19:02,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3114 [2020-10-14 22:19:02,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:02,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:19:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:19:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-14 22:19:02,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:03,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:19:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:03,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:03,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:03,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:19:03,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:03,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:19:03,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:03,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:19:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:19:03,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:19:03,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:19:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:03,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:03,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:03,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:19:03,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-14 22:19:03,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:03,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:19:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:19:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 22:19:03,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:19:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:19:03,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477199048] [2020-10-14 22:19:03,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:19:03,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:19:03,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066047377] [2020-10-14 22:19:03,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:19:03,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:19:03,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:19:03,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:19:03,904 INFO L87 Difference]: Start difference. First operand 3135 states and 3758 transitions. Second operand 7 states. [2020-10-14 22:19:08,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:19:08,300 INFO L93 Difference]: Finished difference Result 7016 states and 8393 transitions. [2020-10-14 22:19:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:19:08,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-14 22:19:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:19:08,321 INFO L225 Difference]: With dead ends: 7016 [2020-10-14 22:19:08,322 INFO L226 Difference]: Without dead ends: 3887 [2020-10-14 22:19:08,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:19:08,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2020-10-14 22:19:08,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 3854. [2020-10-14 22:19:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3854 states. [2020-10-14 22:19:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 4545 transitions. [2020-10-14 22:19:08,420 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 4545 transitions. Word has length 278 [2020-10-14 22:19:08,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:19:08,421 INFO L479 AbstractCegarLoop]: Abstraction has 3854 states and 4545 transitions. [2020-10-14 22:19:08,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:19:08,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 4545 transitions. [2020-10-14 22:19:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-14 22:19:08,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:19:08,427 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:19:08,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:19:08,427 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:19:08,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:19:08,428 INFO L82 PathProgramCache]: Analyzing trace with hash -2016626990, now seen corresponding path program 1 times [2020-10-14 22:19:08,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:19:08,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439794305] [2020-10-14 22:19:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:19:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:08,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:08,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:09,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:09,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:10,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:10,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:13,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:13,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-14 22:19:13,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 22:19:13,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 22:19:13,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:13,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 22:19:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:19:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-14 22:19:13,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:19:13,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:19:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:13,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:13,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:13,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:19:13,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:13,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:19:13,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:13,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:19:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:19:13,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:19:13,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:19:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:13,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:13,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:13,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:13,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:19:13,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:19:13,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 22:19:13,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:13,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:19:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:19:13,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:19:13,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 22:19:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:13,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:13,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:13,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:13,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 22:19:13,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:19:13,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 22:19:13,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:13,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:19:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:19:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 22:19:13,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:13,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-14 22:19:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:14,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:14,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 22:19:14,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 22:19:14,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:14,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:19:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:19:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 22:19:14,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:19:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 228 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 22:19:14,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439794305] [2020-10-14 22:19:14,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:19:14,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:19:14,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377549444] [2020-10-14 22:19:14,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:19:14,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:19:14,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:19:14,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:19:14,311 INFO L87 Difference]: Start difference. First operand 3854 states and 4545 transitions. Second operand 7 states. [2020-10-14 22:19:19,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:19:19,326 INFO L93 Difference]: Finished difference Result 8493 states and 10545 transitions. [2020-10-14 22:19:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:19:19,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-14 22:19:19,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:19:19,343 INFO L225 Difference]: With dead ends: 8493 [2020-10-14 22:19:19,343 INFO L226 Difference]: Without dead ends: 4207 [2020-10-14 22:19:19,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:19:19,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2020-10-14 22:19:19,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 4153. [2020-10-14 22:19:19,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4153 states. [2020-10-14 22:19:19,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 4494 transitions. [2020-10-14 22:19:19,448 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 4494 transitions. Word has length 301 [2020-10-14 22:19:19,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:19:19,449 INFO L479 AbstractCegarLoop]: Abstraction has 4153 states and 4494 transitions. [2020-10-14 22:19:19,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:19:19,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 4494 transitions. [2020-10-14 22:19:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-14 22:19:19,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:19:19,460 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:19:19,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:19:19,461 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:19:19,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:19:19,461 INFO L82 PathProgramCache]: Analyzing trace with hash 125205714, now seen corresponding path program 1 times [2020-10-14 22:19:19,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:19:19,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875416662] [2020-10-14 22:19:19,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:19:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:19,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:20,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:20,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-14 22:19:20,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:19:20,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-14 22:19:20,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:20,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:19:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-14 22:19:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 22:19:20,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:19:20,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:19:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:20,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:20,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:19:20,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:20,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:19:20,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:20,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:20,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:19:20,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:20,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:19:20,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:19:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:20,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:20,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:20,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:19:20,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:20,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 22:19:20,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:20,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:19:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 22:19:20,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:20,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:19:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:21,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:21,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 22:19:21,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:21,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 22:19:21,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:21,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:21,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:19:21,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:19:21,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 22:19:21,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:19:21,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875416662] [2020-10-14 22:19:21,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:19:21,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:19:21,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479799362] [2020-10-14 22:19:21,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:19:21,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:19:21,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:19:21,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:19:21,352 INFO L87 Difference]: Start difference. First operand 4153 states and 4494 transitions. Second operand 8 states. [2020-10-14 22:19:25,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:19:25,984 INFO L93 Difference]: Finished difference Result 10381 states and 11636 transitions. [2020-10-14 22:19:25,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:19:25,985 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2020-10-14 22:19:25,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:19:26,009 INFO L225 Difference]: With dead ends: 10381 [2020-10-14 22:19:26,009 INFO L226 Difference]: Without dead ends: 6910 [2020-10-14 22:19:26,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:19:26,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6910 states. [2020-10-14 22:19:26,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6910 to 6898. [2020-10-14 22:19:26,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6898 states. [2020-10-14 22:19:26,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6898 states to 6898 states and 7681 transitions. [2020-10-14 22:19:26,184 INFO L78 Accepts]: Start accepts. Automaton has 6898 states and 7681 transitions. Word has length 431 [2020-10-14 22:19:26,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:19:26,185 INFO L479 AbstractCegarLoop]: Abstraction has 6898 states and 7681 transitions. [2020-10-14 22:19:26,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:19:26,185 INFO L276 IsEmpty]: Start isEmpty. Operand 6898 states and 7681 transitions. [2020-10-14 22:19:26,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2020-10-14 22:19:26,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:19:26,203 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, 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, 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, 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, 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] [2020-10-14 22:19:26,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:19:26,203 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:19:26,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:19:26,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1192850482, now seen corresponding path program 1 times [2020-10-14 22:19:26,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:19:26,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015389524] [2020-10-14 22:19:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:19:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:26,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:26,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:30,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:30,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 537 [2020-10-14 22:19:30,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:19:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4650 [2020-10-14 22:19:31,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:31,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:19:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:19:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-14 22:19:31,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:31,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:19:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:31,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:31,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:19:31,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:31,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:19:31,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:31,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:31,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:19:31,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:31,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:19:31,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:31,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:19:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:31,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:31,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:31,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:31,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:19:31,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:19:31,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 22:19:31,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:31,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:19:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:31,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 22:19:31,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:31,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:19:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:31,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:31,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:19:31,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:31,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 22:19:31,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:31,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:19:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:19:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 22:19:31,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:19:32,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015389524] [2020-10-14 22:19:32,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:19:32,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:19:32,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262300472] [2020-10-14 22:19:32,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:19:32,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:19:32,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:19:32,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:19:32,438 INFO L87 Difference]: Start difference. First operand 6898 states and 7681 transitions. Second operand 7 states. [2020-10-14 22:19:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:19:34,986 INFO L93 Difference]: Finished difference Result 13120 states and 14671 transitions. [2020-10-14 22:19:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:19:34,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 525 [2020-10-14 22:19:34,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:19:35,012 INFO L225 Difference]: With dead ends: 13120 [2020-10-14 22:19:35,012 INFO L226 Difference]: Without dead ends: 6904 [2020-10-14 22:19:35,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:19:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2020-10-14 22:19:35,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 6902. [2020-10-14 22:19:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6902 states. [2020-10-14 22:19:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6902 states to 6902 states and 7684 transitions. [2020-10-14 22:19:35,151 INFO L78 Accepts]: Start accepts. Automaton has 6902 states and 7684 transitions. Word has length 525 [2020-10-14 22:19:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:19:35,152 INFO L479 AbstractCegarLoop]: Abstraction has 6902 states and 7684 transitions. [2020-10-14 22:19:35,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:19:35,152 INFO L276 IsEmpty]: Start isEmpty. Operand 6902 states and 7684 transitions. [2020-10-14 22:19:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2020-10-14 22:19:35,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:19:35,172 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:19:35,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:19:35,173 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:19:35,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:19:35,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1562843462, now seen corresponding path program 1 times [2020-10-14 22:19:35,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:19:35,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992279318] [2020-10-14 22:19:35,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:19:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:35,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:40,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:40,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 612 [2020-10-14 22:19:40,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:19:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 22:19:40,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:40,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:19:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-14 22:19:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 332 [2020-10-14 22:19:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:40,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:19:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:40,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:40,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:40,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:19:40,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:40,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:19:40,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:40,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:19:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:19:40,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:40,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:19:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:40,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:40,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:19:40,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:40,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 22:19:40,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:40,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:19:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 22:19:40,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:40,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:19:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:40,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:41,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:41,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-14 22:19:41,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:41,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-14 22:19:41,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:41,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:41,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:19:41,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:19:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 333 [2020-10-14 22:19:41,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:41,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:19:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:41,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:41,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 22:19:41,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:41,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 22:19:41,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:41,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:19:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:19:41,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 22:19:41,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:19:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:19:41,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992279318] [2020-10-14 22:19:41,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:19:41,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:19:41,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574604149] [2020-10-14 22:19:41,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:19:41,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:19:41,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:19:41,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:19:41,842 INFO L87 Difference]: Start difference. First operand 6902 states and 7684 transitions. Second operand 8 states. [2020-10-14 22:19:46,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:19:46,959 INFO L93 Difference]: Finished difference Result 15854 states and 18111 transitions. [2020-10-14 22:19:46,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:19:46,960 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 598 [2020-10-14 22:19:46,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:19:46,986 INFO L225 Difference]: With dead ends: 15854 [2020-10-14 22:19:46,986 INFO L226 Difference]: Without dead ends: 9634 [2020-10-14 22:19:46,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:19:47,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9634 states. [2020-10-14 22:19:47,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9634 to 9634. [2020-10-14 22:19:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9634 states. [2020-10-14 22:19:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9634 states to 9634 states and 10731 transitions. [2020-10-14 22:19:47,178 INFO L78 Accepts]: Start accepts. Automaton has 9634 states and 10731 transitions. Word has length 598 [2020-10-14 22:19:47,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:19:47,179 INFO L479 AbstractCegarLoop]: Abstraction has 9634 states and 10731 transitions. [2020-10-14 22:19:47,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:19:47,179 INFO L276 IsEmpty]: Start isEmpty. Operand 9634 states and 10731 transitions. [2020-10-14 22:19:47,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2020-10-14 22:19:47,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:19:47,202 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:19:47,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:19:47,202 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:19:47,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:19:47,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1731890877, now seen corresponding path program 1 times [2020-10-14 22:19:47,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:19:47,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309174726] [2020-10-14 22:19:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:19:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:47,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:51,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:51,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 648 [2020-10-14 22:19:51,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:19:51,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4085 [2020-10-14 22:19:51,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:51,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:19:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-14 22:19:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 22:19:51,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:51,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:19:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:51,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:51,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:19:51,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:51,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:19:51,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:51,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:19:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:19:51,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:51,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:19:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:51,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:51,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:51,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:19:51,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:51,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 22:19:51,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:51,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:51,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:19:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:19:51,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:51,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:19:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:51,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:51,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:51,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:19:51,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:51,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 22:19:51,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:51,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:19:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:51,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 22:19:51,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:51,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:19:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:51,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:51,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:51,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:19:51,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:51,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 22:19:51,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:51,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:19:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:19:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:19:51,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:51,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-14 22:19:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:51,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:51,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:19:51,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:51,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:19:51,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:51,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:19:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 22:19:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:19:51,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 353 proven. 69 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-14 22:19:52,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309174726] [2020-10-14 22:19:52,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:19:52,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:19:52,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713134717] [2020-10-14 22:19:52,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:19:52,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:19:52,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:19:52,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:19:52,126 INFO L87 Difference]: Start difference. First operand 9634 states and 10731 transitions. Second operand 7 states. [2020-10-14 22:19:55,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:19:55,580 INFO L93 Difference]: Finished difference Result 19944 states and 22422 transitions. [2020-10-14 22:19:55,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:19:55,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 632 [2020-10-14 22:19:55,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:19:55,614 INFO L225 Difference]: With dead ends: 19944 [2020-10-14 22:19:55,615 INFO L226 Difference]: Without dead ends: 10992 [2020-10-14 22:19:55,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:19:55,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10992 states. [2020-10-14 22:19:55,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10992 to 10986. [2020-10-14 22:19:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10986 states. [2020-10-14 22:19:55,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10986 states to 10986 states and 12163 transitions. [2020-10-14 22:19:55,790 INFO L78 Accepts]: Start accepts. Automaton has 10986 states and 12163 transitions. Word has length 632 [2020-10-14 22:19:55,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:19:55,791 INFO L479 AbstractCegarLoop]: Abstraction has 10986 states and 12163 transitions. [2020-10-14 22:19:55,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:19:55,792 INFO L276 IsEmpty]: Start isEmpty. Operand 10986 states and 12163 transitions. [2020-10-14 22:19:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2020-10-14 22:19:55,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:19:55,801 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, 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, 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, 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] [2020-10-14 22:19:55,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:19:55,801 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:19:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:19:55,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1668165079, now seen corresponding path program 1 times [2020-10-14 22:19:55,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:19:55,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62093653] [2020-10-14 22:19:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:19:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:56,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:56,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:56,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 666 [2020-10-14 22:19:56,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:56,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-14 22:19:56,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:56,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:19:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-14 22:19:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 22:19:56,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:56,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:19:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:56,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:56,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:56,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:19:56,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:56,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:19:56,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:56,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:56,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:19:56,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:56,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:19:56,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:56,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:19:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:56,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:57,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:57,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:19:57,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:57,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 22:19:57,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:57,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:19:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:19:57,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:57,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:19:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:57,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:57,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:57,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:19:57,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:57,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:19:57,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:57,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:19:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:57,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:19:57,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:19:57,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:19:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:19:57,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:19:57,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:19:57,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:19:57,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:19:57,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 22:19:57,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:19:57,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:19:57,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:19:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:19:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-14 22:19:57,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:19:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2020-10-14 22:19:57,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62093653] [2020-10-14 22:19:57,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:19:57,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:19:57,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285397811] [2020-10-14 22:19:57,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:19:57,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:19:57,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:19:57,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:19:57,760 INFO L87 Difference]: Start difference. First operand 10986 states and 12163 transitions. Second operand 5 states. [2020-10-14 22:20:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:20:00,361 INFO L93 Difference]: Finished difference Result 23653 states and 26245 transitions. [2020-10-14 22:20:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:20:00,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 652 [2020-10-14 22:20:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:20:00,400 INFO L225 Difference]: With dead ends: 23653 [2020-10-14 22:20:00,401 INFO L226 Difference]: Without dead ends: 13349 [2020-10-14 22:20:00,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:20:00,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13349 states. [2020-10-14 22:20:00,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13349 to 13347. [2020-10-14 22:20:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13347 states. [2020-10-14 22:20:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13347 states to 13347 states and 14663 transitions. [2020-10-14 22:20:00,615 INFO L78 Accepts]: Start accepts. Automaton has 13347 states and 14663 transitions. Word has length 652 [2020-10-14 22:20:00,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:20:00,617 INFO L479 AbstractCegarLoop]: Abstraction has 13347 states and 14663 transitions. [2020-10-14 22:20:00,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:20:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 13347 states and 14663 transitions. [2020-10-14 22:20:00,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2020-10-14 22:20:00,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:20:00,657 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2020-10-14 22:20:00,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:20:00,657 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:20:00,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:20:00,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1134470241, now seen corresponding path program 1 times [2020-10-14 22:20:00,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:20:00,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112744243] [2020-10-14 22:20:00,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:20:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:00,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:05,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:05,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:06,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:06,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1220 [2020-10-14 22:20:06,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:20:06,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5170 [2020-10-14 22:20:06,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:06,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:20:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-14 22:20:06,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-14 22:20:06,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:20:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:06,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:06,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:20:06,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:06,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:20:06,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:06,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:06,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:06,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:20:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:06,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:06,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:06,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:20:06,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:06,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:20:06,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:06,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:06,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:06,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:20:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:06,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:06,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:06,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:20:06,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:06,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 22:20:06,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:06,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:06,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:06,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:06,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:06,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:06,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:20:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:06,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:06,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:06,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:20:06,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:06,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 22:20:06,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:06,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:06,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-14 22:20:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:06,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:06,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:06,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 22:20:06,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:06,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 22:20:06,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:06,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:06,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:20:06,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:06,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 22:20:06,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:20:06,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-14 22:20:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:07,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:07,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:20:07,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:07,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-14 22:20:07,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:07,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:20:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:20:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 22:20:07,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:07,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-14 22:20:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:07,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:07,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:07,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 22:20:07,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:07,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 22:20:07,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:07,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 22:20:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:07,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2478 backedges. 937 proven. 111 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2020-10-14 22:20:09,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112744243] [2020-10-14 22:20:09,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:20:09,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:20:09,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087093176] [2020-10-14 22:20:09,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:20:09,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:20:09,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:20:09,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:20:09,613 INFO L87 Difference]: Start difference. First operand 13347 states and 14663 transitions. Second operand 7 states. [2020-10-14 22:20:13,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:20:13,120 INFO L93 Difference]: Finished difference Result 27388 states and 30158 transitions. [2020-10-14 22:20:13,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:20:13,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1200 [2020-10-14 22:20:13,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:20:13,158 INFO L225 Difference]: With dead ends: 27388 [2020-10-14 22:20:13,158 INFO L226 Difference]: Without dead ends: 14723 [2020-10-14 22:20:13,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:20:13,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14723 states. [2020-10-14 22:20:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14723 to 14705. [2020-10-14 22:20:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14705 states. [2020-10-14 22:20:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14705 states to 14705 states and 16074 transitions. [2020-10-14 22:20:13,373 INFO L78 Accepts]: Start accepts. Automaton has 14705 states and 16074 transitions. Word has length 1200 [2020-10-14 22:20:13,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:20:13,374 INFO L479 AbstractCegarLoop]: Abstraction has 14705 states and 16074 transitions. [2020-10-14 22:20:13,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:20:13,374 INFO L276 IsEmpty]: Start isEmpty. Operand 14705 states and 16074 transitions. [2020-10-14 22:20:13,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1338 [2020-10-14 22:20:13,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:20:13,414 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:20:13,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:20:13,415 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:20:13,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:20:13,415 INFO L82 PathProgramCache]: Analyzing trace with hash -45093122, now seen corresponding path program 1 times [2020-10-14 22:20:13,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:20:13,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917441813] [2020-10-14 22:20:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:20:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:13,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:14,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:14,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:18,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:18,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1359 [2020-10-14 22:20:18,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:20:18,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-14 22:20:18,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:18,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:18,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:20:18,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 677 [2020-10-14 22:20:18,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 22:20:18,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:18,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:20:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:18,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:18,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:20:18,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:20:18,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:18,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:18,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:20:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:18,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:18,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:18,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:20:18,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:18,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:20:18,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:18,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:18,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:19,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:20:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:19,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:19,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:19,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:20:19,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:19,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:20:19,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:19,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:19,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:19,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:20:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:19,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:19,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:19,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:20:19,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:19,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 22:20:19,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:19,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:19,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:19,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-14 22:20:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:19,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:19,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:19,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:20:19,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:19,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 22:20:19,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:19,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:20:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 22:20:19,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:20:19,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-14 22:20:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:19,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:19,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:19,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 22:20:19,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-14 22:20:19,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:19,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:20:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:20:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-14 22:20:19,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:19,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 931 [2020-10-14 22:20:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:19,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:19,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:19,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:20:19,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:19,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 22:20:19,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:19,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-14 22:20:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:19,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:20,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1204 [2020-10-14 22:20:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:20,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:20,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:20,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 22:20:20,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:20,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 22:20:20,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:20,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:20,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:20,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 22:20:20,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:20,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3059 backedges. 850 proven. 370 refuted. 0 times theorem prover too weak. 1839 trivial. 0 not checked. [2020-10-14 22:20:21,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917441813] [2020-10-14 22:20:21,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:20:21,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:20:21,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757277583] [2020-10-14 22:20:21,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:20:21,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:20:21,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:20:21,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:20:21,290 INFO L87 Difference]: Start difference. First operand 14705 states and 16074 transitions. Second operand 8 states. [2020-10-14 22:20:26,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:20:26,715 INFO L93 Difference]: Finished difference Result 32793 states and 35981 transitions. [2020-10-14 22:20:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:20:26,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1337 [2020-10-14 22:20:26,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:20:26,765 INFO L225 Difference]: With dead ends: 32793 [2020-10-14 22:20:26,765 INFO L226 Difference]: Without dead ends: 18770 [2020-10-14 22:20:26,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:20:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18770 states. [2020-10-14 22:20:27,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18770 to 18425. [2020-10-14 22:20:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18425 states. [2020-10-14 22:20:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18425 states to 18425 states and 19979 transitions. [2020-10-14 22:20:27,039 INFO L78 Accepts]: Start accepts. Automaton has 18425 states and 19979 transitions. Word has length 1337 [2020-10-14 22:20:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:20:27,040 INFO L479 AbstractCegarLoop]: Abstraction has 18425 states and 19979 transitions. [2020-10-14 22:20:27,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:20:27,040 INFO L276 IsEmpty]: Start isEmpty. Operand 18425 states and 19979 transitions. [2020-10-14 22:20:27,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1402 [2020-10-14 22:20:27,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:20:27,090 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-14 22:20:27,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:20:27,091 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:20:27,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:20:27,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1446300206, now seen corresponding path program 1 times [2020-10-14 22:20:27,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:20:27,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011205339] [2020-10-14 22:20:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:20:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:27,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:27,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:30,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:31,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:32,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:32,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1421 [2020-10-14 22:20:32,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:20:32,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 22:20:32,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:32,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:20:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-14 22:20:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-14 22:20:32,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:32,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:20:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:32,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:32,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:32,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:20:32,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:20:32,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:32,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:32,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:32,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:20:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:32,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:32,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:32,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:20:32,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:32,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 22:20:32,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:32,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:32,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:32,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:32,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:32,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:20:32,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:20:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:32,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:32,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:32,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:20:32,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 22:20:32,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:32,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:20:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 22:20:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:32,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:20:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:32,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:33,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:33,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:20:33,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 22:20:33,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:33,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:20:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:20:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 22:20:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:33,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2020-10-14 22:20:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:33,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:33,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 22:20:33,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:33,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 22:20:33,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:33,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-14 22:20:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:33,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:33,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-14 22:20:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:33,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:33,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:33,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:20:33,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:33,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 22:20:33,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:33,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:33,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:33,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-14 22:20:33,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:33,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:33,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1268 [2020-10-14 22:20:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:33,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:33,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:33,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 22:20:33,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:33,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:20:33,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:33,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 22:20:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:33,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 617 proven. 603 refuted. 0 times theorem prover too weak. 1852 trivial. 0 not checked. [2020-10-14 22:20:34,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011205339] [2020-10-14 22:20:34,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:20:34,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:20:34,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822714158] [2020-10-14 22:20:34,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:20:34,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:20:34,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:20:34,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:20:34,561 INFO L87 Difference]: Start difference. First operand 18425 states and 19979 transitions. Second operand 7 states. [2020-10-14 22:20:39,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:20:39,302 INFO L93 Difference]: Finished difference Result 36518 states and 39625 transitions. [2020-10-14 22:20:39,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:20:39,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1401 [2020-10-14 22:20:39,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:20:39,344 INFO L225 Difference]: With dead ends: 36518 [2020-10-14 22:20:39,344 INFO L226 Difference]: Without dead ends: 18775 [2020-10-14 22:20:39,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:20:39,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18775 states. [2020-10-14 22:20:39,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18775 to 18436. [2020-10-14 22:20:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18436 states. [2020-10-14 22:20:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18436 states to 18436 states and 19603 transitions. [2020-10-14 22:20:39,652 INFO L78 Accepts]: Start accepts. Automaton has 18436 states and 19603 transitions. Word has length 1401 [2020-10-14 22:20:39,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:20:39,653 INFO L479 AbstractCegarLoop]: Abstraction has 18436 states and 19603 transitions. [2020-10-14 22:20:39,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:20:39,653 INFO L276 IsEmpty]: Start isEmpty. Operand 18436 states and 19603 transitions. [2020-10-14 22:20:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1449 [2020-10-14 22:20:39,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:20:39,695 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2020-10-14 22:20:39,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 22:20:39,696 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:20:39,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:20:39,696 INFO L82 PathProgramCache]: Analyzing trace with hash 377747511, now seen corresponding path program 1 times [2020-10-14 22:20:39,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:20:39,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206716658] [2020-10-14 22:20:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:20:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:40,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:40,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:40,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:42,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:45,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:45,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1470 [2020-10-14 22:20:45,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:20:45,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 22:20:45,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:45,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:45,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:20:45,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1052 [2020-10-14 22:20:45,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 417 [2020-10-14 22:20:45,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:45,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:20:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:45,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:45,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:45,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:20:45,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:45,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:20:45,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:45,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:45,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:45,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:20:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:45,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:45,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:20:45,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:45,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:20:45,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:45,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:45,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:45,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:45,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:45,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:45,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:20:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:45,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:45,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:20:45,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:45,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 22:20:45,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:45,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:45,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:45,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 22:20:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:45,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:45,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:45,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 22:20:45,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:45,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:20:45,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:45,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:45,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:45,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:45,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:45,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:45,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-14 22:20:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:45,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:45,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:45,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:20:45,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:20:45,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:45,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:45,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2020-10-14 22:20:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:45,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:45,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:45,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 22:20:45,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:45,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 22:20:45,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:45,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:20:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-14 22:20:45,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:45,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1042 [2020-10-14 22:20:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:46,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:46,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:20:46,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:20:46,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-14 22:20:46,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:46,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:20:46,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:46,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-14 22:20:46,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1315 [2020-10-14 22:20:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:46,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:46,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:46,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:46,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 22:20:46,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:20:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 22:20:46,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:46,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:20:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 22:20:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 207 proven. 7 refuted. 0 times theorem prover too weak. 3260 trivial. 0 not checked. [2020-10-14 22:20:47,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206716658] [2020-10-14 22:20:47,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:20:47,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:20:47,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753714320] [2020-10-14 22:20:47,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:20:47,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:20:47,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:20:47,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:20:47,554 INFO L87 Difference]: Start difference. First operand 18436 states and 19603 transitions. Second operand 5 states. [2020-10-14 22:20:50,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:20:50,356 INFO L93 Difference]: Finished difference Result 36190 states and 38514 transitions. [2020-10-14 22:20:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:20:50,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1448 [2020-10-14 22:20:50,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:20:50,389 INFO L225 Difference]: With dead ends: 36190 [2020-10-14 22:20:50,389 INFO L226 Difference]: Without dead ends: 18436 [2020-10-14 22:20:50,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:20:50,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18436 states. [2020-10-14 22:20:50,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18436 to 18436. [2020-10-14 22:20:50,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18436 states. [2020-10-14 22:20:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18436 states to 18436 states and 19338 transitions. [2020-10-14 22:20:50,645 INFO L78 Accepts]: Start accepts. Automaton has 18436 states and 19338 transitions. Word has length 1448 [2020-10-14 22:20:50,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:20:50,646 INFO L479 AbstractCegarLoop]: Abstraction has 18436 states and 19338 transitions. [2020-10-14 22:20:50,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:20:50,647 INFO L276 IsEmpty]: Start isEmpty. Operand 18436 states and 19338 transitions. [2020-10-14 22:20:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1507 [2020-10-14 22:20:50,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:20:50,690 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2020-10-14 22:20:50,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 22:20:50,691 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:20:50,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:20:50,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1841088501, now seen corresponding path program 1 times [2020-10-14 22:20:50,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:20:50,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544455989] [2020-10-14 22:20:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:20:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:51,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:51,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:51,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:56,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:56,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1528 [2020-10-14 22:20:56,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:20:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5153 [2020-10-14 22:20:56,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:56,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:20:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1052 [2020-10-14 22:20:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-14 22:20:56,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:56,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:20:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:56,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:56,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:56,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:20:56,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:56,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:20:56,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:56,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:56,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:56,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:56,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:56,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:56,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:20:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:56,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:56,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:56,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:20:56,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 22:20:56,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:56,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:56,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:20:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:56,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:56,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:56,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:20:56,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:56,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 22:20:56,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:56,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:56,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:56,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:56,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:56,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:56,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 22:20:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:56,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:56,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:56,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 22:20:56,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:56,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:20:56,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:56,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:56,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:56,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-14 22:20:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:56,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:56,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:56,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:20:56,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:20:56,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:56,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:56,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2020-10-14 22:20:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:56,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:56,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:56,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 22:20:56,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:56,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 22:20:56,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:56,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:56,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:20:56,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:20:56,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-14 22:20:56,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1042 [2020-10-14 22:20:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:57,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:57,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:20:57,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:57,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 22:20:57,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:57,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:20:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:20:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 22:20:57,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:57,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1315 [2020-10-14 22:20:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:20:57,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:20:57,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:20:57,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 22:20:57,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:20:57,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 22:20:57,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:20:57,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:20:57,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:20:57,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-14 22:20:57,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:20:57,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:20:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3756 backedges. 1210 proven. 169 refuted. 0 times theorem prover too weak. 2377 trivial. 0 not checked. [2020-10-14 22:20:58,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544455989] [2020-10-14 22:20:58,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:20:58,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:20:58,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557882026] [2020-10-14 22:20:58,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:20:58,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:20:58,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:20:58,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:20:58,446 INFO L87 Difference]: Start difference. First operand 18436 states and 19338 transitions. Second operand 7 states. [2020-10-14 22:21:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:21:01,822 INFO L93 Difference]: Finished difference Result 36196 states and 37995 transitions. [2020-10-14 22:21:01,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:21:01,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1506 [2020-10-14 22:21:01,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:21:01,855 INFO L225 Difference]: With dead ends: 36196 [2020-10-14 22:21:01,855 INFO L226 Difference]: Without dead ends: 18442 [2020-10-14 22:21:01,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:21:01,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18442 states. [2020-10-14 22:21:02,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18442 to 18436. [2020-10-14 22:21:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18436 states. [2020-10-14 22:21:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18436 states to 18436 states and 19330 transitions. [2020-10-14 22:21:02,110 INFO L78 Accepts]: Start accepts. Automaton has 18436 states and 19330 transitions. Word has length 1506 [2020-10-14 22:21:02,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:21:02,111 INFO L479 AbstractCegarLoop]: Abstraction has 18436 states and 19330 transitions. [2020-10-14 22:21:02,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:21:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 18436 states and 19330 transitions. [2020-10-14 22:21:02,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1511 [2020-10-14 22:21:02,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:21:02,145 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2020-10-14 22:21:02,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 22:21:02,146 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:21:02,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:21:02,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1881817361, now seen corresponding path program 1 times [2020-10-14 22:21:02,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:21:02,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385332300] [2020-10-14 22:21:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:21:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:02,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:02,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:03,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:07,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:07,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1532 [2020-10-14 22:21:07,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:21:07,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-14 22:21:07,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:07,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:07,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:21:07,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 792 [2020-10-14 22:21:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 22:21:07,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:21:07,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:21:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:07,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:07,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:07,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:21:07,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:21:07,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:07,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:07,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:07,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:07,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:21:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:07,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:07,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:07,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:21:07,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:07,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 22:21:07,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:07,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:07,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:07,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:21:07,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:21:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:07,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:07,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:07,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:21:07,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:07,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:21:07,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:07,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:07,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:07,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:21:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:07,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:08,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:08,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:21:08,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:08,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 22:21:08,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:08,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:08,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:08,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:08,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:08,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:21:08,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 22:21:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:08,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:08,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:08,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 22:21:08,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 22:21:08,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:08,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:21:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 22:21:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:08,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-14 22:21:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:08,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:08,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:08,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 22:21:08,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:08,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 22:21:08,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:08,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:21:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:21:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-14 22:21:08,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:08,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1046 [2020-10-14 22:21:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:08,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:08,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:08,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:21:08,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:08,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 22:21:08,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:08,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-14 22:21:08,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:08,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:08,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1319 [2020-10-14 22:21:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:08,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:09,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:09,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 22:21:09,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:09,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 22:21:09,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:09,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:09,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:09,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-14 22:21:09,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:09,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3950 backedges. 965 proven. 428 refuted. 0 times theorem prover too weak. 2557 trivial. 0 not checked. [2020-10-14 22:21:10,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385332300] [2020-10-14 22:21:10,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:21:10,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:21:10,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806546469] [2020-10-14 22:21:10,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:21:10,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:21:10,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:21:10,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:21:10,146 INFO L87 Difference]: Start difference. First operand 18436 states and 19330 transitions. Second operand 7 states. [2020-10-14 22:21:13,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:21:13,788 INFO L93 Difference]: Finished difference Result 39922 states and 41939 transitions. [2020-10-14 22:21:13,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:21:13,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1510 [2020-10-14 22:21:13,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:21:13,822 INFO L225 Difference]: With dead ends: 39922 [2020-10-14 22:21:13,822 INFO L226 Difference]: Without dead ends: 22168 [2020-10-14 22:21:13,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:21:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22168 states. [2020-10-14 22:21:14,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22168 to 21825. [2020-10-14 22:21:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21825 states. [2020-10-14 22:21:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21825 states to 21825 states and 22918 transitions. [2020-10-14 22:21:14,076 INFO L78 Accepts]: Start accepts. Automaton has 21825 states and 22918 transitions. Word has length 1510 [2020-10-14 22:21:14,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:21:14,077 INFO L479 AbstractCegarLoop]: Abstraction has 21825 states and 22918 transitions. [2020-10-14 22:21:14,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:21:14,078 INFO L276 IsEmpty]: Start isEmpty. Operand 21825 states and 22918 transitions. [2020-10-14 22:21:14,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1516 [2020-10-14 22:21:14,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:21:14,110 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-14 22:21:14,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 22:21:14,110 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:21:14,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:21:14,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1694447394, now seen corresponding path program 1 times [2020-10-14 22:21:14,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:21:14,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781311742] [2020-10-14 22:21:14,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:21:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:14,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:14,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:16,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:17,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:19,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:19,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:19,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1537 [2020-10-14 22:21:19,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:21:19,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-14 22:21:19,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:19,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:21:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1061 [2020-10-14 22:21:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-14 22:21:19,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:19,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:21:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:19,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:19,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:21:19,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:19,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:21:19,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:19,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:19,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:19,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:19,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:21:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:19,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:19,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:19,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:21:19,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:19,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 22:21:19,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:19,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:19,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:19,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:21:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:19,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:19,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:19,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:21:19,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:19,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:21:19,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:19,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:19,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:19,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:21:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:19,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:19,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:19,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 22:21:19,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:19,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 22:21:19,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:19,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:19,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:19,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:19,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-14 22:21:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:19,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:19,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:19,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 22:21:19,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:19,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 22:21:19,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:19,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:19,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:19,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-10-14 22:21:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:20,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:20,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:20,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 22:21:20,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:20,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 22:21:20,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:20,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:21:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-14 22:21:20,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:20,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1051 [2020-10-14 22:21:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:20,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:20,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:20,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:21:20,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-14 22:21:20,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:20,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:21:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:21:20,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 22:21:20,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1324 [2020-10-14 22:21:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:21,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:21,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 22:21:21,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:21,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 22:21:21,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:21,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:21,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:21,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-14 22:21:21,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:21:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3953 backedges. 1222 proven. 169 refuted. 0 times theorem prover too weak. 2562 trivial. 0 not checked. [2020-10-14 22:21:23,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781311742] [2020-10-14 22:21:23,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:21:23,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:21:23,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693663091] [2020-10-14 22:21:23,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:21:23,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:21:23,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:21:23,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:21:23,033 INFO L87 Difference]: Start difference. First operand 21825 states and 22918 transitions. Second operand 7 states. [2020-10-14 22:21:26,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:21:26,375 INFO L93 Difference]: Finished difference Result 42980 states and 45165 transitions. [2020-10-14 22:21:26,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:21:26,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1515 [2020-10-14 22:21:26,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:21:26,407 INFO L225 Difference]: With dead ends: 42980 [2020-10-14 22:21:26,408 INFO L226 Difference]: Without dead ends: 21837 [2020-10-14 22:21:26,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:21:26,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21837 states. [2020-10-14 22:21:26,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21837 to 21823. [2020-10-14 22:21:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21823 states. [2020-10-14 22:21:26,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21823 states to 21823 states and 22888 transitions. [2020-10-14 22:21:26,637 INFO L78 Accepts]: Start accepts. Automaton has 21823 states and 22888 transitions. Word has length 1515 [2020-10-14 22:21:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:21:26,638 INFO L479 AbstractCegarLoop]: Abstraction has 21823 states and 22888 transitions. [2020-10-14 22:21:26,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:21:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 21823 states and 22888 transitions. [2020-10-14 22:21:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1549 [2020-10-14 22:21:26,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:21:26,662 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1] [2020-10-14 22:21:26,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 22:21:26,662 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:21:26,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:21:26,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1561819785, now seen corresponding path program 1 times [2020-10-14 22:21:26,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:21:26,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932384680] [2020-10-14 22:21:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:21:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:27,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:31,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:31,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1574 [2020-10-14 22:21:31,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:21:31,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-14 22:21:31,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:31,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:31,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:21:31,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 914 [2020-10-14 22:21:31,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-14 22:21:31,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:32,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:21:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:32,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:32,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:32,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:21:32,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:32,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:21:32,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:32,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:32,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:32,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:21:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:32,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:32,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:32,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:21:32,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:32,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 22:21:32,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:32,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:32,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:21:32,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:21:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:32,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:32,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:32,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:21:32,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:32,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 22:21:32,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:32,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:32,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:32,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:32,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:32,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:32,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:21:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:32,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:32,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:32,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 22:21:32,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:21:32,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:32,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:32,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-14 22:21:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:32,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:32,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:32,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 22:21:32,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:32,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 22:21:32,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:32,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:32,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:32,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:32,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-10-14 22:21:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:32,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:32,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:32,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:21:32,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 22:21:32,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:32,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:21:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:21:32,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:21:32,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 904 [2020-10-14 22:21:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:32,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:33,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:33,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 22:21:33,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:33,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-14 22:21:33,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:33,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:33,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:21:33,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:21:33,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-14 22:21:33,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:33,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1154 [2020-10-14 22:21:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:33,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:33,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:33,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 22:21:33,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:33,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 22:21:33,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:33,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-14 22:21:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:33,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:33,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:21:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:33,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:33,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:33,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 22:21:33,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:33,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:21:33,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:33,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:33,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:33,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:33,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:33,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1455 [2020-10-14 22:21:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:33,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:33,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:33,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:21:33,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 22:21:33,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:33,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 22:21:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4175 backedges. 1117 proven. 318 refuted. 0 times theorem prover too weak. 2740 trivial. 0 not checked. [2020-10-14 22:21:34,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932384680] [2020-10-14 22:21:34,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:21:34,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:21:34,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54068491] [2020-10-14 22:21:34,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:21:34,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:21:34,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:21:34,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:21:34,922 INFO L87 Difference]: Start difference. First operand 21823 states and 22888 transitions. Second operand 7 states. [2020-10-14 22:21:38,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:21:38,788 INFO L93 Difference]: Finished difference Result 43307 states and 45436 transitions. [2020-10-14 22:21:38,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:21:38,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1548 [2020-10-14 22:21:38,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:21:38,821 INFO L225 Difference]: With dead ends: 43307 [2020-10-14 22:21:38,821 INFO L226 Difference]: Without dead ends: 22166 [2020-10-14 22:21:38,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:21:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22166 states. [2020-10-14 22:21:39,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22166 to 22160. [2020-10-14 22:21:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22160 states. [2020-10-14 22:21:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22160 states to 22160 states and 23228 transitions. [2020-10-14 22:21:39,103 INFO L78 Accepts]: Start accepts. Automaton has 22160 states and 23228 transitions. Word has length 1548 [2020-10-14 22:21:39,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:21:39,104 INFO L479 AbstractCegarLoop]: Abstraction has 22160 states and 23228 transitions. [2020-10-14 22:21:39,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:21:39,104 INFO L276 IsEmpty]: Start isEmpty. Operand 22160 states and 23228 transitions. [2020-10-14 22:21:39,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1715 [2020-10-14 22:21:39,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:21:39,160 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1] [2020-10-14 22:21:39,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 22:21:39,161 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:21:39,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:21:39,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1610557089, now seen corresponding path program 1 times [2020-10-14 22:21:39,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:21:39,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319099273] [2020-10-14 22:21:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:21:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:39,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:41,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:45,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:45,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1742 [2020-10-14 22:21:45,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:21:45,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5903 [2020-10-14 22:21:45,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:45,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:21:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1636 [2020-10-14 22:21:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:21:45,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:45,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:21:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:45,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:45,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:45,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:21:45,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:45,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:21:45,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:45,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:45,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:45,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:45,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:45,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:45,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:21:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:45,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:45,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:45,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:21:45,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:45,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:21:45,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:45,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:45,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:45,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:21:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:45,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:45,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:45,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:21:45,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:45,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:21:45,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:45,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:45,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:45,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:45,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:45,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:45,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:21:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:45,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:45,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:21:45,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:45,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:21:45,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:45,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:45,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:45,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 22:21:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:45,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:45,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:45,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 22:21:45,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:45,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:21:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:45,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:45,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:45,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-14 22:21:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:45,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:45,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:45,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:21:45,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 22:21:45,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:45,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:45,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 928 [2020-10-14 22:21:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:45,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:46,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:46,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:21:46,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:46,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:21:46,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:46,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:46,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:21:46,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2020-10-14 22:21:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:46,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:46,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:46,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 22:21:46,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:46,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 22:21:46,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:46,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:46,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:46,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1320 [2020-10-14 22:21:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:46,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:46,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 22:21:46,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:46,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 22:21:46,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:46,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:21:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 295 [2020-10-14 22:21:46,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:46,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:21:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:46,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:46,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:46,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 22:21:46,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:46,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 22:21:46,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:46,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:21:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 22:21:46,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:46,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1621 [2020-10-14 22:21:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:46,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:46,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:21:46,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:46,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 22:21:46,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:46,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:46,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:21:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:21:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 22:21:46,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5426 backedges. 785 proven. 2 refuted. 0 times theorem prover too weak. 4639 trivial. 0 not checked. [2020-10-14 22:21:47,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319099273] [2020-10-14 22:21:47,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:21:47,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:21:47,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164668485] [2020-10-14 22:21:47,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:21:47,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:21:47,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:21:47,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:21:47,658 INFO L87 Difference]: Start difference. First operand 22160 states and 23228 transitions. Second operand 7 states. [2020-10-14 22:21:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:21:51,373 INFO L93 Difference]: Finished difference Result 46372 states and 48820 transitions. [2020-10-14 22:21:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:21:51,374 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1714 [2020-10-14 22:21:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:21:51,404 INFO L225 Difference]: With dead ends: 46372 [2020-10-14 22:21:51,405 INFO L226 Difference]: Without dead ends: 21490 [2020-10-14 22:21:51,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:21:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21490 states. [2020-10-14 22:21:51,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21490 to 21456. [2020-10-14 22:21:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21456 states. [2020-10-14 22:21:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21456 states to 21456 states and 22382 transitions. [2020-10-14 22:21:51,645 INFO L78 Accepts]: Start accepts. Automaton has 21456 states and 22382 transitions. Word has length 1714 [2020-10-14 22:21:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:21:51,646 INFO L479 AbstractCegarLoop]: Abstraction has 21456 states and 22382 transitions. [2020-10-14 22:21:51,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:21:51,646 INFO L276 IsEmpty]: Start isEmpty. Operand 21456 states and 22382 transitions. [2020-10-14 22:21:51,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1930 [2020-10-14 22:21:51,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:21:51,690 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1] [2020-10-14 22:21:51,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 22:21:51,691 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:21:51,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:21:51,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1932602578, now seen corresponding path program 1 times [2020-10-14 22:21:51,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:21:51,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632114190] [2020-10-14 22:21:51,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:21:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:52,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:52,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:57,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:57,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1959 [2020-10-14 22:21:57,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:21:57,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5393 [2020-10-14 22:21:57,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:57,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:57,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:21:57,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1636 [2020-10-14 22:21:57,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-14 22:21:57,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:57,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:21:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:57,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:57,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:57,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:21:57,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:57,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:21:57,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:57,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:57,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:57,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:57,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:57,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:57,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:21:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:57,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:57,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:57,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:21:57,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:57,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:21:57,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:57,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:57,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:57,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:21:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:57,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:57,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:57,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:21:57,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:57,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:21:57,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:57,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:57,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:57,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:57,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:57,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:57,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:21:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:57,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:57,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:57,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:21:57,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:57,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:21:57,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:57,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:57,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:57,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:57,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:57,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:57,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 22:21:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:57,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:57,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:57,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 22:21:57,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:57,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:21:57,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:57,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:57,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:57,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:57,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-14 22:21:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:57,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:57,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:57,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:21:57,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:57,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 22:21:57,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:57,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:57,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:58,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 928 [2020-10-14 22:21:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:58,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:58,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:58,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:21:58,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:58,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:21:58,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:58,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:58,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:58,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:58,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2020-10-14 22:21:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:58,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:58,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 22:21:58,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:58,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 22:21:58,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:58,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:58,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:58,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1320 [2020-10-14 22:21:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:58,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:58,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:58,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 22:21:58,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:58,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 22:21:58,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:58,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:21:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 295 [2020-10-14 22:21:58,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:58,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:21:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:58,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:58,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:58,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 22:21:58,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:58,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:21:58,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:58,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:21:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:21:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 22:21:58,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:58,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1621 [2020-10-14 22:21:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:58,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:58,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:58,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 22:21:58,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:58,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 22:21:58,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:58,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:21:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:21:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-14 22:21:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:21:59,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1836 [2020-10-14 22:21:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:21:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:21:59,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:21:59,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:21:59,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:21:59,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:21:59,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:21:59,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:21:59,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:21:59,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 22:21:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:21:59,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:22:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6976 backedges. 1719 proven. 71 refuted. 0 times theorem prover too weak. 5186 trivial. 0 not checked. [2020-10-14 22:22:01,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632114190] [2020-10-14 22:22:01,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:22:01,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:22:01,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200917401] [2020-10-14 22:22:01,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:22:01,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:22:01,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:22:01,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:22:01,523 INFO L87 Difference]: Start difference. First operand 21456 states and 22382 transitions. Second operand 7 states.