/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem17_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:53:51,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:53:51,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:53:51,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:53:51,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:53:51,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:53:51,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:53:51,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:53:51,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:53:51,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:53:51,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:53:51,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:53:51,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:53:51,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:53:51,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:53:51,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:53:51,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:53:51,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:53:51,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:53:51,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:53:52,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:53:52,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:53:52,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:53:52,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:53:52,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:53:52,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:53:52,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:53:52,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:53:52,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:53:52,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:53:52,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:53:52,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:53:52,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:53:52,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:53:52,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:53:52,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:53:52,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:53:52,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:53:52,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:53:52,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:53:52,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:53:52,015 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 03:53:52,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:53:52,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:53:52,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:53:52,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:53:52,039 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:53:52,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:53:52,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:53:52,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:53:52,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:53:52,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:53:52,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:53:52,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:53:52,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:53:52,040 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:53:52,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:53:52,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:53:52,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:53:52,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:53:52,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:53:52,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:53:52,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:53:52,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:53:52,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:53:52,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:53:52,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:53:52,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:53:52,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:53:52,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:53:52,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:53:52,044 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:53:52,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:53:52,372 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:53:52,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:53:52,378 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:53:52,379 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:53:52,379 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00.c [2020-10-14 03:53:52,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59b4ab9ba/ba3e710ef43f48f8ac15848aa8ad8ddc/FLAG56eaae69a [2020-10-14 03:53:53,164 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:53:53,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label00.c [2020-10-14 03:53:53,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59b4ab9ba/ba3e710ef43f48f8ac15848aa8ad8ddc/FLAG56eaae69a [2020-10-14 03:53:53,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59b4ab9ba/ba3e710ef43f48f8ac15848aa8ad8ddc [2020-10-14 03:53:53,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:53:53,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:53:53,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:53:53,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:53:53,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:53:53,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:53:53" (1/1) ... [2020-10-14 03:53:53,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a530e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:53:53, skipping insertion in model container [2020-10-14 03:53:53,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:53:53" (1/1) ... [2020-10-14 03:53:53,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:53:53,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:53:54,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:53:54,759 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:53:55,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:53:55,165 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:53:55,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:53:55 WrapperNode [2020-10-14 03:53:55,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:53:55,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:53:55,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:53:55,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:53:55,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:53:55" (1/1) ... [2020-10-14 03:53:55,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:53:55" (1/1) ... [2020-10-14 03:53:55,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:53:55" (1/1) ... [2020-10-14 03:53:55,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:53:55" (1/1) ... [2020-10-14 03:53:55,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:53:55" (1/1) ... [2020-10-14 03:53:55,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:53:55" (1/1) ... [2020-10-14 03:53:55,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:53:55" (1/1) ... [2020-10-14 03:53:55,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:53:55,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:53:55,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:53:55,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:53:55,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:53:55" (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 03:53:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:53:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:53:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:53:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:53:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:53:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:53:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:53:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:53:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:53:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:53:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:53:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:53:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:54:02,031 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:54:02,031 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:54:02,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:54:02 BoogieIcfgContainer [2020-10-14 03:54:02,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:54:02,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:54:02,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:54:02,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:54:02,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:53:53" (1/3) ... [2020-10-14 03:54:02,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284f7c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:54:02, skipping insertion in model container [2020-10-14 03:54:02,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:53:55" (2/3) ... [2020-10-14 03:54:02,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284f7c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:54:02, skipping insertion in model container [2020-10-14 03:54:02,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:54:02" (3/3) ... [2020-10-14 03:54:02,050 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label00.c [2020-10-14 03:54:02,061 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:54:02,070 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:54:02,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:54:02,114 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:54:02,114 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:54:02,114 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:54:02,115 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:54:02,115 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:54:02,115 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:54:02,115 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:54:02,115 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:54:02,147 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 03:54:02,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 03:54:02,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:54:02,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:54:02,159 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:54:02,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:54:02,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1065858481, now seen corresponding path program 1 times [2020-10-14 03:54:02,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:54:02,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236599485] [2020-10-14 03:54:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:54:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:02,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:02,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:02,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 03:54:02,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:02,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-14 03:54:02,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:02,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:02,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:54:02,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:54:02,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 03:54:02,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:54:03,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:54:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:03,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:03,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:54:03,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:03,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 03:54:03,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:03,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:03,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:54:03,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:03,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:54:03,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:54:03,241 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 03:54:03,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236599485] [2020-10-14 03:54:03,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:54:03,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:54:03,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955382576] [2020-10-14 03:54:03,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:54:03,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:54:03,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:54:03,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:54:03,281 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 03:54:15,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:54:15,941 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 03:54:15,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:54:15,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-14 03:54:15,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:54:15,967 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 03:54:15,968 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 03:54:15,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:54:15,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 03:54:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 03:54:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 03:54:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 03:54:16,112 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 60 [2020-10-14 03:54:16,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:54:16,113 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 03:54:16,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:54:16,113 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 03:54:16,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 03:54:16,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:54:16,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:54:16,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:54:16,120 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:54:16,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:54:16,120 INFO L82 PathProgramCache]: Analyzing trace with hash 856983708, now seen corresponding path program 1 times [2020-10-14 03:54:16,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:54:16,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277928839] [2020-10-14 03:54:16,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:54:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:16,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:16,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:17,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:17,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:17,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 03:54:17,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:54:17,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1338 [2020-10-14 03:54:17,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:17,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:54:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 03:54:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 03:54:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:54:17,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:54:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:17,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:17,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:17,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:54:17,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:17,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:54:17,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:17,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:54:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:54:17,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:17,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:54:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:17,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:17,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:17,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:54:17,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:17,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 03:54:17,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:17,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:17,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:54:17,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:17,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:54:17,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:54:17,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277928839] [2020-10-14 03:54:17,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:54:17,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:54:17,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73584381] [2020-10-14 03:54:17,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:54:17,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:54:17,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:54:17,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:54:17,895 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 5 states. [2020-10-14 03:54:32,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:54:32,382 INFO L93 Difference]: Finished difference Result 2899 states and 4501 transitions. [2020-10-14 03:54:32,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:54:32,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-14 03:54:32,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:54:32,399 INFO L225 Difference]: With dead ends: 2899 [2020-10-14 03:54:32,400 INFO L226 Difference]: Without dead ends: 1914 [2020-10-14 03:54:32,404 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 03:54:32,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-10-14 03:54:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1889. [2020-10-14 03:54:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2020-10-14 03:54:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2683 transitions. [2020-10-14 03:54:32,483 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2683 transitions. Word has length 131 [2020-10-14 03:54:32,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:54:32,484 INFO L479 AbstractCegarLoop]: Abstraction has 1889 states and 2683 transitions. [2020-10-14 03:54:32,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:54:32,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2683 transitions. [2020-10-14 03:54:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 03:54:32,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:54:32,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:54:32,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:54:32,488 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:54:32,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:54:32,488 INFO L82 PathProgramCache]: Analyzing trace with hash 264021352, now seen corresponding path program 1 times [2020-10-14 03:54:32,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:54:32,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577549628] [2020-10-14 03:54:32,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:54:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:33,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:34,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:34,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:54:34,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:54:34,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1667 [2020-10-14 03:54:34,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:34,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 03:54:34,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:54:34,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 03:54:34,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:34,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:54:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:34,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:34,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:54:34,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:34,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 03:54:34,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:34,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:54:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:54:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:54:34,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:54:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:34,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:34,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:34,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:54:34,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:34,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 03:54:34,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:34,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:54:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:54:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:54:34,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:54:34,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577549628] [2020-10-14 03:54:34,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:54:34,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:54:34,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715973504] [2020-10-14 03:54:34,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:54:34,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:54:34,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:54:34,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:54:34,981 INFO L87 Difference]: Start difference. First operand 1889 states and 2683 transitions. Second operand 8 states. [2020-10-14 03:54:56,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:54:56,225 INFO L93 Difference]: Finished difference Result 5661 states and 8146 transitions. [2020-10-14 03:54:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 03:54:56,227 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-10-14 03:54:56,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:54:56,248 INFO L225 Difference]: With dead ends: 5661 [2020-10-14 03:54:56,248 INFO L226 Difference]: Without dead ends: 3778 [2020-10-14 03:54:56,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 03:54:56,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2020-10-14 03:54:56,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3719. [2020-10-14 03:54:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3719 states. [2020-10-14 03:54:56,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3719 states to 3719 states and 5050 transitions. [2020-10-14 03:54:56,366 INFO L78 Accepts]: Start accepts. Automaton has 3719 states and 5050 transitions. Word has length 134 [2020-10-14 03:54:56,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:54:56,367 INFO L479 AbstractCegarLoop]: Abstraction has 3719 states and 5050 transitions. [2020-10-14 03:54:56,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:54:56,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3719 states and 5050 transitions. [2020-10-14 03:54:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 03:54:56,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:54:56,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:54:56,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:54:56,371 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:54:56,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:54:56,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1843114881, now seen corresponding path program 1 times [2020-10-14 03:54:56,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:54:56,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552998170] [2020-10-14 03:54:56,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:54:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:56,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:56,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:57,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:57,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 03:54:57,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:54:57,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1386 [2020-10-14 03:54:57,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:57,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:54:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 03:54:57,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 03:54:57,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:54:57,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:54:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:57,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:57,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:57,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:54:57,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:57,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:54:57,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:57,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:57,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:54:57,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:57,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:54:57,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:57,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:54:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:57,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:58,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:58,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:54:58,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:58,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 03:54:58,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:58,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:58,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:54:58,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:58,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 03:54:58,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:54:58,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552998170] [2020-10-14 03:54:58,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:54:58,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:54:58,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187990402] [2020-10-14 03:54:58,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:54:58,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:54:58,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:54:58,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:54:58,158 INFO L87 Difference]: Start difference. First operand 3719 states and 5050 transitions. Second operand 5 states. [2020-10-14 03:55:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:09,377 INFO L93 Difference]: Finished difference Result 7496 states and 10901 transitions. [2020-10-14 03:55:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:55:09,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-14 03:55:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:09,412 INFO L225 Difference]: With dead ends: 7496 [2020-10-14 03:55:09,413 INFO L226 Difference]: Without dead ends: 5552 [2020-10-14 03:55:09,421 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 03:55:09,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2020-10-14 03:55:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 5523. [2020-10-14 03:55:09,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5523 states. [2020-10-14 03:55:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 7452 transitions. [2020-10-14 03:55:09,626 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 7452 transitions. Word has length 150 [2020-10-14 03:55:09,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:09,628 INFO L479 AbstractCegarLoop]: Abstraction has 5523 states and 7452 transitions. [2020-10-14 03:55:09,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:55:09,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 7452 transitions. [2020-10-14 03:55:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 03:55:09,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:09,637 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:55:09,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:55:09,637 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:09,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:09,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1502766055, now seen corresponding path program 1 times [2020-10-14 03:55:09,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:09,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487547178] [2020-10-14 03:55:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:09,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:09,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:10,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:11,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:14,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:14,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 03:55:14,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:55:14,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 03:55:14,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:14,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:14,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:14,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:55:14,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:55:14,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:14,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:14,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:14,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:14,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:14,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:14,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:55:14,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:14,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:14,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:14,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:15,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:15,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:55:15,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:15,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 03:55:15,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:15,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:15,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:55:15,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 03:55:15,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 03:55:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:15,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:15,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:55:15,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:15,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 03:55:15,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:15,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:15,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:15,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:55:15,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:55:15,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:55:15,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487547178] [2020-10-14 03:55:15,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:55:15,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:55:15,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992857753] [2020-10-14 03:55:15,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:55:15,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:15,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:55:15,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:55:15,329 INFO L87 Difference]: Start difference. First operand 5523 states and 7452 transitions. Second operand 7 states. [2020-10-14 03:55:30,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:30,942 INFO L93 Difference]: Finished difference Result 13479 states and 18959 transitions. [2020-10-14 03:55:30,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:55:30,943 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-14 03:55:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:30,974 INFO L225 Difference]: With dead ends: 13479 [2020-10-14 03:55:30,974 INFO L226 Difference]: Without dead ends: 5255 [2020-10-14 03:55:30,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:55:31,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5255 states. [2020-10-14 03:55:31,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5255 to 5126. [2020-10-14 03:55:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5126 states. [2020-10-14 03:55:31,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 6531 transitions. [2020-10-14 03:55:31,155 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 6531 transitions. Word has length 204 [2020-10-14 03:55:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:31,156 INFO L479 AbstractCegarLoop]: Abstraction has 5126 states and 6531 transitions. [2020-10-14 03:55:31,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:55:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 6531 transitions. [2020-10-14 03:55:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 03:55:31,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:31,159 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:55:31,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:55:31,160 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:31,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:31,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1003169669, now seen corresponding path program 1 times [2020-10-14 03:55:31,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:31,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897815531] [2020-10-14 03:55:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:31,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:31,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:32,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:32,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 03:55:32,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:55:32,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 808 [2020-10-14 03:55:32,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:32,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:32,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:32,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 03:55:32,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:55:32,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:32,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:32,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:32,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:32,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:32,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:55:32,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:32,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:32,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:32,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:32,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:32,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:32,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:32,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:55:32,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:32,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 03:55:32,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:32,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:32,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:32,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:32,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:55:32,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:55:32,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:55:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:32,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:32,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:55:32,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:32,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 03:55:32,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:32,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:55:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:55:32,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:55:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:55:32,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897815531] [2020-10-14 03:55:32,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:55:32,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:55:32,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142151528] [2020-10-14 03:55:32,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:55:32,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:32,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:55:32,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:55:32,557 INFO L87 Difference]: Start difference. First operand 5126 states and 6531 transitions. Second operand 7 states. [2020-10-14 03:55:44,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:44,638 INFO L93 Difference]: Finished difference Result 12990 states and 17335 transitions. [2020-10-14 03:55:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:55:44,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-14 03:55:44,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:44,692 INFO L225 Difference]: With dead ends: 12990 [2020-10-14 03:55:44,693 INFO L226 Difference]: Without dead ends: 8303 [2020-10-14 03:55:44,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:55:44,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8303 states. [2020-10-14 03:55:44,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8303 to 8277. [2020-10-14 03:55:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-10-14 03:55:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 10472 transitions. [2020-10-14 03:55:44,923 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 10472 transitions. Word has length 217 [2020-10-14 03:55:44,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:44,924 INFO L479 AbstractCegarLoop]: Abstraction has 8277 states and 10472 transitions. [2020-10-14 03:55:44,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:55:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 10472 transitions. [2020-10-14 03:55:44,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 03:55:44,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:44,932 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 03:55:44,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:55:44,932 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:44,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:44,933 INFO L82 PathProgramCache]: Analyzing trace with hash 52415849, now seen corresponding path program 1 times [2020-10-14 03:55:44,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:44,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199988924] [2020-10-14 03:55:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:45,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:45,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:48,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:48,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-14 03:55:48,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:55:48,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3499 [2020-10-14 03:55:48,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:48,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 03:55:48,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 03:55:48,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:55:48,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:48,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:48,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:48,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:48,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:48,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:55:48,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:48,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:48,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:55:48,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:48,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:48,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:48,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:55:48,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:48,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 03:55:48,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:48,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:48,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:48,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:48,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:48,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:48,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:55:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:48,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:48,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:48,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:55:48,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:48,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 03:55:48,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:48,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:48,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:48,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:48,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:55:48,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 03:55:48,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199988924] [2020-10-14 03:55:48,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:55:48,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:55:48,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725619110] [2020-10-14 03:55:48,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:55:48,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:48,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:55:48,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:55:48,913 INFO L87 Difference]: Start difference. First operand 8277 states and 10472 transitions. Second operand 5 states. [2020-10-14 03:56:07,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:07,812 INFO L93 Difference]: Finished difference Result 19216 states and 25132 transitions. [2020-10-14 03:56:07,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:56:07,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-14 03:56:07,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:07,863 INFO L225 Difference]: With dead ends: 19216 [2020-10-14 03:56:07,863 INFO L226 Difference]: Without dead ends: 12702 [2020-10-14 03:56:07,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:56:07,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12702 states. [2020-10-14 03:56:08,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12702 to 11825. [2020-10-14 03:56:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11825 states. [2020-10-14 03:56:08,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11825 states to 11825 states and 14731 transitions. [2020-10-14 03:56:08,198 INFO L78 Accepts]: Start accepts. Automaton has 11825 states and 14731 transitions. Word has length 222 [2020-10-14 03:56:08,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:08,199 INFO L479 AbstractCegarLoop]: Abstraction has 11825 states and 14731 transitions. [2020-10-14 03:56:08,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:56:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 11825 states and 14731 transitions. [2020-10-14 03:56:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 03:56:08,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:08,205 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:08,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:56:08,206 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:08,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:08,206 INFO L82 PathProgramCache]: Analyzing trace with hash 165100670, now seen corresponding path program 1 times [2020-10-14 03:56:08,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:08,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266277794] [2020-10-14 03:56:08,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:10,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:10,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 03:56:10,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:56:10,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2020 [2020-10-14 03:56:10,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:10,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 03:56:10,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:56:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:10,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:10,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:10,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:10,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:10,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:56:10,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:10,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:10,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:10,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:10,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:10,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:10,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:56:10,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:10,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 03:56:10,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:10,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:56:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:56:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:11,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:11,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 03:56:11,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:11,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-14 03:56:11,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:11,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:11,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:56:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:56:11,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:11,629 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:56:11,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266277794] [2020-10-14 03:56:11,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:11,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:56:11,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999019641] [2020-10-14 03:56:11,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:56:11,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:11,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:56:11,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:56:11,632 INFO L87 Difference]: Start difference. First operand 11825 states and 14731 transitions. Second operand 7 states. [2020-10-14 03:56:13,052 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-10-14 03:56:31,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:31,274 INFO L93 Difference]: Finished difference Result 24292 states and 30873 transitions. [2020-10-14 03:56:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:56:31,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-14 03:56:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:31,329 INFO L225 Difference]: With dead ends: 24292 [2020-10-14 03:56:31,330 INFO L226 Difference]: Without dead ends: 12906 [2020-10-14 03:56:31,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:56:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12906 states. [2020-10-14 03:56:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12906 to 12873. [2020-10-14 03:56:31,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12873 states. [2020-10-14 03:56:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12873 states to 12873 states and 16014 transitions. [2020-10-14 03:56:31,840 INFO L78 Accepts]: Start accepts. Automaton has 12873 states and 16014 transitions. Word has length 256 [2020-10-14 03:56:31,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:31,841 INFO L479 AbstractCegarLoop]: Abstraction has 12873 states and 16014 transitions. [2020-10-14 03:56:31,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:56:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 12873 states and 16014 transitions. [2020-10-14 03:56:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-14 03:56:31,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:31,848 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:56:31,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:56:31,849 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:31,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:31,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1079686944, now seen corresponding path program 1 times [2020-10-14 03:56:31,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:31,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113393742] [2020-10-14 03:56:31,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:31,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:32,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:32,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:35,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:36,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:36,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 03:56:36,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:56:36,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 03:56:36,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:36,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 03:56:36,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:56:36,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:56:37,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:37,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:37,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:37,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:56:37,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:37,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:37,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:37,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:56:37,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:37,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:37,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:37,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:56:37,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:37,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 03:56:37,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:37,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:37,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:37,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:37,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:37,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:56:37,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:56:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:37,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:37,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:56:37,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:37,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 03:56:37,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:37,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:37,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:37,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:37,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:56:37,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:37,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-14 03:56:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:37,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:37,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:37,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:56:37,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 03:56:37,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:37,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:37,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:56:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:56:37,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-14 03:56:37,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113393742] [2020-10-14 03:56:37,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:37,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:56:37,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403133158] [2020-10-14 03:56:37,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:56:37,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:37,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:56:37,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:56:37,597 INFO L87 Difference]: Start difference. First operand 12873 states and 16014 transitions. Second operand 7 states. [2020-10-14 03:56:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:57,596 INFO L93 Difference]: Finished difference Result 31307 states and 40213 transitions. [2020-10-14 03:56:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:56:57,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-14 03:56:57,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:57,689 INFO L225 Difference]: With dead ends: 31307 [2020-10-14 03:56:57,689 INFO L226 Difference]: Without dead ends: 18827 [2020-10-14 03:56:57,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:56:57,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18827 states. [2020-10-14 03:56:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18827 to 18279. [2020-10-14 03:56:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18279 states. [2020-10-14 03:56:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18279 states to 18279 states and 23050 transitions. [2020-10-14 03:56:58,191 INFO L78 Accepts]: Start accepts. Automaton has 18279 states and 23050 transitions. Word has length 296 [2020-10-14 03:56:58,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:58,192 INFO L479 AbstractCegarLoop]: Abstraction has 18279 states and 23050 transitions. [2020-10-14 03:56:58,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:56:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 18279 states and 23050 transitions. [2020-10-14 03:56:58,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-14 03:56:58,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:58,199 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:58,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:56:58,200 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:58,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:58,201 INFO L82 PathProgramCache]: Analyzing trace with hash 444130502, now seen corresponding path program 1 times [2020-10-14 03:56:58,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:58,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137836083] [2020-10-14 03:56:58,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:58,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:58,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:59,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:03,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:03,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-14 03:57:03,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:57:03,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 03:57:03,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:03,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:03,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:03,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-14 03:57:03,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 03:57:03,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:03,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:03,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:03,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:03,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:03,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:57:03,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:03,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:03,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:03,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:03,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:03,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:57:03,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:03,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 03:57:03,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:03,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:03,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:03,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:57:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:03,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:03,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:03,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 03:57:03,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:03,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 03:57:03,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:03,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 03:57:03,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 03:57:03,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137836083] [2020-10-14 03:57:03,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:03,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:57:03,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959751816] [2020-10-14 03:57:03,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:57:03,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:03,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:57:03,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:57:03,898 INFO L87 Difference]: Start difference. First operand 18279 states and 23050 transitions. Second operand 5 states. [2020-10-14 03:57:23,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:23,197 INFO L93 Difference]: Finished difference Result 36123 states and 45791 transitions. [2020-10-14 03:57:23,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:57:23,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2020-10-14 03:57:23,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:23,268 INFO L225 Difference]: With dead ends: 36123 [2020-10-14 03:57:23,268 INFO L226 Difference]: Without dead ends: 18718 [2020-10-14 03:57:23,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:57:23,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18718 states. [2020-10-14 03:57:23,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18718 to 18279. [2020-10-14 03:57:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18279 states. [2020-10-14 03:57:23,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18279 states to 18279 states and 23121 transitions. [2020-10-14 03:57:23,690 INFO L78 Accepts]: Start accepts. Automaton has 18279 states and 23121 transitions. Word has length 299 [2020-10-14 03:57:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:23,691 INFO L479 AbstractCegarLoop]: Abstraction has 18279 states and 23121 transitions. [2020-10-14 03:57:23,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:57:23,691 INFO L276 IsEmpty]: Start isEmpty. Operand 18279 states and 23121 transitions. [2020-10-14 03:57:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-14 03:57:23,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:23,697 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 03:57:23,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:57:23,698 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:23,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:23,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1851240139, now seen corresponding path program 1 times [2020-10-14 03:57:23,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:23,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352893120] [2020-10-14 03:57:23,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:23,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:23,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:24,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:25,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:25,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-14 03:57:25,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:57:25,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1632 [2020-10-14 03:57:25,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:25,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:25,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:25,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 03:57:25,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:57:25,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:25,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:25,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:25,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:25,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:25,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:25,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:57:25,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:25,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:25,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:25,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:25,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:25,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:25,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:25,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:57:25,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:25,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 03:57:25,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:25,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:25,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:25,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:57:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:25,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:25,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:25,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:57:25,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:25,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 03:57:25,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:25,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:25,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:25,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:25,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:57:25,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:25,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 03:57:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:25,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:25,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:25,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:57:25,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:25,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 03:57:25,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:25,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:57:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:57:25,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 03:57:25,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352893120] [2020-10-14 03:57:25,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:25,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:57:25,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848916036] [2020-10-14 03:57:25,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:57:25,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:25,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:57:25,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:57:25,918 INFO L87 Difference]: Start difference. First operand 18279 states and 23121 transitions. Second operand 7 states.