/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/Problem12_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:46:02,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:46:02,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:46:02,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:46:02,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:46:02,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:46:02,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:46:02,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:46:02,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:46:02,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:46:02,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:46:02,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:46:02,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:46:02,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:46:02,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:46:02,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:46:02,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:46:02,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:46:03,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:46:03,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:46:03,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:46:03,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:46:03,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:46:03,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:46:03,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:46:03,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:46:03,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:46:03,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:46:03,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:46:03,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:46:03,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:46:03,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:46:03,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:46:03,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:46:03,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:46:03,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:46:03,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:46:03,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:46:03,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:46:03,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:46:03,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:46:03,018 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 02:46:03,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:46:03,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:46:03,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:46:03,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:46:03,051 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:46:03,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:46:03,052 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:46:03,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:46:03,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:46:03,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:46:03,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:46:03,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:46:03,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:46:03,054 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:46:03,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:46:03,055 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:46:03,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:46:03,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:46:03,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:46:03,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:46:03,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:46:03,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:46:03,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:46:03,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:46:03,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:46:03,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:46:03,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:46:03,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:46:03,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:46:03,059 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 02:46:03,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:46:03,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:46:03,420 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:46:03,426 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:46:03,426 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:46:03,427 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-14 02:46:03,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f8df2797/1c27e1bff7994f61aee1de4965f4bab0/FLAGcbb53842f [2020-10-14 02:46:04,333 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:46:04,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-14 02:46:04,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f8df2797/1c27e1bff7994f61aee1de4965f4bab0/FLAGcbb53842f [2020-10-14 02:46:04,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f8df2797/1c27e1bff7994f61aee1de4965f4bab0 [2020-10-14 02:46:04,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:46:04,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:46:04,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:46:04,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:46:04,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:46:04,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:46:04" (1/1) ... [2020-10-14 02:46:04,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a7ca91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:46:04, skipping insertion in model container [2020-10-14 02:46:04,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:46:04" (1/1) ... [2020-10-14 02:46:04,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:46:05,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:46:06,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:46:06,553 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:46:07,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:46:07,272 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:46:07,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:46:07 WrapperNode [2020-10-14 02:46:07,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:46:07,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:46:07,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:46:07,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:46:07,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:46:07" (1/1) ... [2020-10-14 02:46:07,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:46:07" (1/1) ... [2020-10-14 02:46:07,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:46:07" (1/1) ... [2020-10-14 02:46:07,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:46:07" (1/1) ... [2020-10-14 02:46:07,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:46:07" (1/1) ... [2020-10-14 02:46:07,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:46:07" (1/1) ... [2020-10-14 02:46:07,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:46:07" (1/1) ... [2020-10-14 02:46:07,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:46:07,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:46:07,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:46:07,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:46:07,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:46:07" (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 02:46:07,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:46:07,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:46:07,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:46:07,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:46:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:46:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:46:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:46:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:46:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:46:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:46:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:46:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:46:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:46:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:46:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:46:07,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:46:07,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:46:13,398 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:46:13,399 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:46:13,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:46:13 BoogieIcfgContainer [2020-10-14 02:46:13,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:46:13,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:46:13,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:46:13,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:46:13,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:46:04" (1/3) ... [2020-10-14 02:46:13,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48de4514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:46:13, skipping insertion in model container [2020-10-14 02:46:13,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:46:07" (2/3) ... [2020-10-14 02:46:13,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48de4514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:46:13, skipping insertion in model container [2020-10-14 02:46:13,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:46:13" (3/3) ... [2020-10-14 02:46:13,419 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label18.c [2020-10-14 02:46:13,431 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:46:13,441 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:46:13,457 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:46:13,487 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:46:13,487 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:46:13,487 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:46:13,488 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:46:13,488 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:46:13,488 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:46:13,488 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:46:13,488 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:46:13,524 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:46:13,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 02:46:13,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:13,536 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] [2020-10-14 02:46:13,537 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:13,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:13,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1489686398, now seen corresponding path program 1 times [2020-10-14 02:46:13,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:13,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234605891] [2020-10-14 02:46:13,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:13,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:14,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:14,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 02:46:14,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:14,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-14 02:46:14,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:14,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:46:14,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:46:14,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 02:46:14,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:46:14,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:14,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:14,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:14,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:14,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:14,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 02:46:14,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:14,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:46:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:14,394 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 02:46:14,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234605891] [2020-10-14 02:46:14,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:46:14,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 02:46:14,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437055349] [2020-10-14 02:46:14,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:46:14,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:14,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:46:14,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:46:14,426 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 02:46:23,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:23,432 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:46:23,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:46:23,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-14 02:46:23,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:23,466 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:46:23,466 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:46:23,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:46:23,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:46:23,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:46:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:46:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 02:46:23,637 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 59 [2020-10-14 02:46:23,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:23,640 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 02:46:23,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:46:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 02:46:23,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 02:46:23,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:23,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:23,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:46:23,651 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:23,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:23,652 INFO L82 PathProgramCache]: Analyzing trace with hash -612385541, now seen corresponding path program 1 times [2020-10-14 02:46:23,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:23,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783416798] [2020-10-14 02:46:23,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:23,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:24,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:25,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:25,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 02:46:25,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:46:25,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1277 [2020-10-14 02:46:25,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:25,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:25,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:25,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:46:25,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 02:46:25,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:46:25,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:25,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:25,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:25,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:25,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:25,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 02:46:25,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:25,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:25,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:25,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:25,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:25,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:46:25,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:25,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 02:46:25,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:25,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:46:25,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:46:25,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783416798] [2020-10-14 02:46:25,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:25,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:46:25,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371048352] [2020-10-14 02:46:25,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:46:25,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:25,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:46:25,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:46:25,386 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-14 02:46:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:36,009 INFO L93 Difference]: Finished difference Result 4671 states and 7648 transitions. [2020-10-14 02:46:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:46:36,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 02:46:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:36,038 INFO L225 Difference]: With dead ends: 4671 [2020-10-14 02:46:36,038 INFO L226 Difference]: Without dead ends: 3124 [2020-10-14 02:46:36,044 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 02:46:36,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2020-10-14 02:46:36,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3111. [2020-10-14 02:46:36,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3111 states. [2020-10-14 02:46:36,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4441 transitions. [2020-10-14 02:46:36,147 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4441 transitions. Word has length 134 [2020-10-14 02:46:36,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:36,148 INFO L479 AbstractCegarLoop]: Abstraction has 3111 states and 4441 transitions. [2020-10-14 02:46:36,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:46:36,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4441 transitions. [2020-10-14 02:46:36,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 02:46:36,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:36,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:36,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:46:36,153 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:36,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:36,153 INFO L82 PathProgramCache]: Analyzing trace with hash 532689859, now seen corresponding path program 1 times [2020-10-14 02:46:36,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:36,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403392166] [2020-10-14 02:46:36,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:36,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:36,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:37,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:37,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:37,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 02:46:37,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:46:37,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1100 [2020-10-14 02:46:37,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:37,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:37,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:37,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:46:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 02:46:37,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:37,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:37,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:37,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:37,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:37,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:37,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:46:37,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:37,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:37,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:37,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:37,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:37,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:37,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:46:37,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:37,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 02:46:37,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:37,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:37,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:37,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:37,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:46:37,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:46:37,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403392166] [2020-10-14 02:46:37,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:37,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:46:37,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467459639] [2020-10-14 02:46:37,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:46:37,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:37,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:46:37,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:46:37,619 INFO L87 Difference]: Start difference. First operand 3111 states and 4441 transitions. Second operand 5 states. [2020-10-14 02:46:48,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:48,039 INFO L93 Difference]: Finished difference Result 7785 states and 11481 transitions. [2020-10-14 02:46:48,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:46:48,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-14 02:46:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:48,068 INFO L225 Difference]: With dead ends: 7785 [2020-10-14 02:46:48,068 INFO L226 Difference]: Without dead ends: 4680 [2020-10-14 02:46:48,077 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 02:46:48,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2020-10-14 02:46:48,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4676. [2020-10-14 02:46:48,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4676 states. [2020-10-14 02:46:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 6448 transitions. [2020-10-14 02:46:48,208 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 6448 transitions. Word has length 138 [2020-10-14 02:46:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:48,209 INFO L479 AbstractCegarLoop]: Abstraction has 4676 states and 6448 transitions. [2020-10-14 02:46:48,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:46:48,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 6448 transitions. [2020-10-14 02:46:48,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-14 02:46:48,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:48,215 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, 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] [2020-10-14 02:46:48,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:46:48,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:48,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:48,216 INFO L82 PathProgramCache]: Analyzing trace with hash 689124214, now seen corresponding path program 1 times [2020-10-14 02:46:48,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:48,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542238009] [2020-10-14 02:46:48,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:48,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:52,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:52,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 02:46:52,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:46:52,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4049 [2020-10-14 02:46:52,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:52,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:46:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 02:46:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:52,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:52,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:52,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:52,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:52,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:52,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 02:46:52,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:52,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:52,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:52,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:52,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:52,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:52,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:52,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:46:52,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:52,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 02:46:52,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:52,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:46:52,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:52,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:46:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:52,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:52,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:46:52,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:52,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 02:46:52,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:52,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:52,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:46:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:46:52,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:46:52,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542238009] [2020-10-14 02:46:52,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:52,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:46:52,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493389322] [2020-10-14 02:46:52,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:46:52,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:52,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:46:52,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:46:52,824 INFO L87 Difference]: Start difference. First operand 4676 states and 6448 transitions. Second operand 8 states. [2020-10-14 02:47:10,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:10,631 INFO L93 Difference]: Finished difference Result 18887 states and 27315 transitions. [2020-10-14 02:47:10,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 02:47:10,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 211 [2020-10-14 02:47:10,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:10,711 INFO L225 Difference]: With dead ends: 18887 [2020-10-14 02:47:10,711 INFO L226 Difference]: Without dead ends: 14217 [2020-10-14 02:47:10,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 02:47:10,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14217 states. [2020-10-14 02:47:11,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14217 to 14164. [2020-10-14 02:47:11,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14164 states. [2020-10-14 02:47:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14164 states to 14164 states and 19353 transitions. [2020-10-14 02:47:11,155 INFO L78 Accepts]: Start accepts. Automaton has 14164 states and 19353 transitions. Word has length 211 [2020-10-14 02:47:11,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:11,156 INFO L479 AbstractCegarLoop]: Abstraction has 14164 states and 19353 transitions. [2020-10-14 02:47:11,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:47:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 14164 states and 19353 transitions. [2020-10-14 02:47:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-14 02:47:11,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:11,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:11,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:47:11,163 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:11,164 INFO L82 PathProgramCache]: Analyzing trace with hash 277700142, now seen corresponding path program 1 times [2020-10-14 02:47:11,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:11,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524918210] [2020-10-14 02:47:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:11,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:11,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:12,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:12,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 02:47:12,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:47:12,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-10-14 02:47:12,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:12,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 02:47:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 02:47:12,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:12,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:12,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:12,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:12,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:12,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:12,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:47:12,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:12,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:12,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:12,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:12,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:47:12,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:12,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 02:47:12,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:12,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 02:47:12,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:47:12,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524918210] [2020-10-14 02:47:12,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:47:12,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:47:12,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166351429] [2020-10-14 02:47:12,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:47:12,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:12,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:47:12,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:47:12,862 INFO L87 Difference]: Start difference. First operand 14164 states and 19353 transitions. Second operand 5 states. [2020-10-14 02:47:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:23,382 INFO L93 Difference]: Finished difference Result 33038 states and 45351 transitions. [2020-10-14 02:47:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:47:23,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-14 02:47:23,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:23,461 INFO L225 Difference]: With dead ends: 33038 [2020-10-14 02:47:23,462 INFO L226 Difference]: Without dead ends: 18880 [2020-10-14 02:47:23,493 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 02:47:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18880 states. [2020-10-14 02:47:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18880 to 18863. [2020-10-14 02:47:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18863 states. [2020-10-14 02:47:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18863 states to 18863 states and 25014 transitions. [2020-10-14 02:47:24,001 INFO L78 Accepts]: Start accepts. Automaton has 18863 states and 25014 transitions. Word has length 211 [2020-10-14 02:47:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:24,001 INFO L479 AbstractCegarLoop]: Abstraction has 18863 states and 25014 transitions. [2020-10-14 02:47:24,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:47:24,002 INFO L276 IsEmpty]: Start isEmpty. Operand 18863 states and 25014 transitions. [2020-10-14 02:47:24,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 02:47:24,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:24,008 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, 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] [2020-10-14 02:47:24,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:47:24,009 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:24,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:24,009 INFO L82 PathProgramCache]: Analyzing trace with hash -754204881, now seen corresponding path program 1 times [2020-10-14 02:47:24,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:24,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910619491] [2020-10-14 02:47:24,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:24,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:24,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:24,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:25,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:25,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 02:47:25,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:47:25,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1309 [2020-10-14 02:47:25,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:25,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:47:25,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 02:47:25,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:25,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:25,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:25,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:25,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:25,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:47:25,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:25,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:25,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:25,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:25,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:25,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:25,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:25,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:47:25,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:25,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 02:47:25,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:25,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:47:25,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:25,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 02:47:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:25,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:25,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:25,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 02:47:25,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:25,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 02:47:25,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:25,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:47:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:47:25,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:26,128 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:47:26,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910619491] [2020-10-14 02:47:26,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:47:26,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:47:26,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928044420] [2020-10-14 02:47:26,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:47:26,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:26,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:47:26,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:47:26,133 INFO L87 Difference]: Start difference. First operand 18863 states and 25014 transitions. Second operand 7 states. [2020-10-14 02:47:41,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:41,448 INFO L93 Difference]: Finished difference Result 42596 states and 57179 transitions. [2020-10-14 02:47:41,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:47:41,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-14 02:47:41,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:41,551 INFO L225 Difference]: With dead ends: 42596 [2020-10-14 02:47:41,552 INFO L226 Difference]: Without dead ends: 23739 [2020-10-14 02:47:41,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:47:41,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23739 states. [2020-10-14 02:47:42,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23739 to 23695. [2020-10-14 02:47:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23695 states. [2020-10-14 02:47:42,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23695 states to 23695 states and 30750 transitions. [2020-10-14 02:47:42,146 INFO L78 Accepts]: Start accepts. Automaton has 23695 states and 30750 transitions. Word has length 258 [2020-10-14 02:47:42,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:42,147 INFO L479 AbstractCegarLoop]: Abstraction has 23695 states and 30750 transitions. [2020-10-14 02:47:42,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:47:42,147 INFO L276 IsEmpty]: Start isEmpty. Operand 23695 states and 30750 transitions. [2020-10-14 02:47:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-14 02:47:42,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:42,155 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:47:42,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:47:42,156 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:42,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:42,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1785875123, now seen corresponding path program 1 times [2020-10-14 02:47:42,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:42,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314253151] [2020-10-14 02:47:42,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:42,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:42,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:44,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:44,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-14 02:47:44,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:47:44,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2731 [2020-10-14 02:47:44,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:44,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:44,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:44,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-10-14 02:47:44,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 02:47:44,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:45,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:45,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:45,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:45,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:45,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:45,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:47:45,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:45,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:45,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:45,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:45,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:45,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:45,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:45,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:45,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:47:45,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:45,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 02:47:45,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:45,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:45,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 02:47:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:45,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:45,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:45,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:47:45,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:45,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 02:47:45,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:45,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:45,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:45,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:45,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:47:45,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 02:47:45,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314253151] [2020-10-14 02:47:45,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:47:45,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:47:45,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985240320] [2020-10-14 02:47:45,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:47:45,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:45,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:47:45,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:47:45,519 INFO L87 Difference]: Start difference. First operand 23695 states and 30750 transitions. Second operand 5 states. [2020-10-14 02:48:01,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:48:01,103 INFO L93 Difference]: Finished difference Result 62242 states and 79971 transitions. [2020-10-14 02:48:01,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:48:01,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2020-10-14 02:48:01,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:48:01,254 INFO L225 Difference]: With dead ends: 62242 [2020-10-14 02:48:01,254 INFO L226 Difference]: Without dead ends: 38553 [2020-10-14 02:48:01,309 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 02:48:01,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38553 states. [2020-10-14 02:48:02,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38553 to 37769. [2020-10-14 02:48:02,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37769 states. [2020-10-14 02:48:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37769 states to 37769 states and 47239 transitions. [2020-10-14 02:48:02,181 INFO L78 Accepts]: Start accepts. Automaton has 37769 states and 47239 transitions. Word has length 280 [2020-10-14 02:48:02,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:48:02,182 INFO L479 AbstractCegarLoop]: Abstraction has 37769 states and 47239 transitions. [2020-10-14 02:48:02,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:48:02,182 INFO L276 IsEmpty]: Start isEmpty. Operand 37769 states and 47239 transitions. [2020-10-14 02:48:02,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-14 02:48:02,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:48:02,192 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:48:02,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:48:02,192 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:48:02,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:48:02,193 INFO L82 PathProgramCache]: Analyzing trace with hash -110419854, now seen corresponding path program 1 times [2020-10-14 02:48:02,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:48:02,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37859128] [2020-10-14 02:48:02,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:48:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:02,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:02,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:04,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:07,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:07,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-14 02:48:07,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:48:07,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 02:48:07,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:07,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:07,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:07,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 02:48:07,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 02:48:07,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:48:07,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:48:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:07,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:07,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:07,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:48:07,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:07,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:48:07,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:07,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:07,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:48:07,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:07,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:48:07,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:07,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:48:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:07,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:07,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:07,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:48:07,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:07,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 02:48:07,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:07,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:07,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:48:07,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:48:07,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:07,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 02:48:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:07,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:07,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:48:07,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:07,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 02:48:07,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:07,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:07,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:48:07,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:07,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:48:07,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 02:48:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:07,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:07,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:07,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 02:48:07,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:07,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 02:48:07,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:07,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:07,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:48:07,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 02:48:07,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:48:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-14 02:48:07,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37859128] [2020-10-14 02:48:07,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:48:07,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:48:07,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414007488] [2020-10-14 02:48:07,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:48:07,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:48:07,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:48:07,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:48:07,953 INFO L87 Difference]: Start difference. First operand 37769 states and 47239 transitions. Second operand 7 states. [2020-10-14 02:48:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:48:45,207 INFO L93 Difference]: Finished difference Result 108888 states and 143565 transitions. [2020-10-14 02:48:45,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:48:45,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-14 02:48:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:48:45,588 INFO L225 Difference]: With dead ends: 108888 [2020-10-14 02:48:45,588 INFO L226 Difference]: Without dead ends: 67983 [2020-10-14 02:48:45,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:48:45,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67983 states. [2020-10-14 02:48:48,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67983 to 65372. [2020-10-14 02:48:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65372 states. [2020-10-14 02:48:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65372 states to 65372 states and 81362 transitions. [2020-10-14 02:48:48,849 INFO L78 Accepts]: Start accepts. Automaton has 65372 states and 81362 transitions. Word has length 307 [2020-10-14 02:48:48,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:48:48,851 INFO L479 AbstractCegarLoop]: Abstraction has 65372 states and 81362 transitions. [2020-10-14 02:48:48,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:48:48,851 INFO L276 IsEmpty]: Start isEmpty. Operand 65372 states and 81362 transitions. [2020-10-14 02:48:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-14 02:48:48,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:48:48,868 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:48:48,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:48:48,868 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:48:48,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:48:48,869 INFO L82 PathProgramCache]: Analyzing trace with hash 944085382, now seen corresponding path program 1 times [2020-10-14 02:48:48,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:48:48,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740922142] [2020-10-14 02:48:48,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:48:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:49,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:50,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:50,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-14 02:48:50,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:48:50,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1385 [2020-10-14 02:48:50,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:50,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 02:48:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 02:48:50,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:48:50,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:48:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:50,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:50,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:50,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:48:50,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:50,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:48:50,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:50,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:48:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:48:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:50,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:48:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:50,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:50,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:50,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 02:48:50,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:50,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 02:48:50,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:50,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:50,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:48:50,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 02:48:50,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:50,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 02:48:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:50,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:51,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:51,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 02:48:51,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 02:48:51,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:51,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:48:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 02:48:51,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:48:51,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740922142] [2020-10-14 02:48:51,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:48:51,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:48:51,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915058292] [2020-10-14 02:48:51,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:48:51,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:48:51,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:48:51,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:48:51,784 INFO L87 Difference]: Start difference. First operand 65372 states and 81362 transitions. Second operand 8 states. [2020-10-14 02:49:23,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:49:23,537 INFO L93 Difference]: Finished difference Result 224837 states and 296500 transitions. [2020-10-14 02:49:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:49:23,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 319 [2020-10-14 02:49:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:49:24,183 INFO L225 Difference]: With dead ends: 224837 [2020-10-14 02:49:24,184 INFO L226 Difference]: Without dead ends: 159475 [2020-10-14 02:49:24,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:49:24,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159475 states. [2020-10-14 02:49:26,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159475 to 151805. [2020-10-14 02:49:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151805 states. [2020-10-14 02:49:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151805 states to 151805 states and 199050 transitions. [2020-10-14 02:49:27,178 INFO L78 Accepts]: Start accepts. Automaton has 151805 states and 199050 transitions. Word has length 319 [2020-10-14 02:49:27,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:49:27,178 INFO L479 AbstractCegarLoop]: Abstraction has 151805 states and 199050 transitions. [2020-10-14 02:49:27,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:49:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 151805 states and 199050 transitions. [2020-10-14 02:49:27,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-14 02:49:27,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:27,203 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:27,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:49:27,204 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:27,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:27,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1103269887, now seen corresponding path program 1 times [2020-10-14 02:49:27,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:27,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743851869] [2020-10-14 02:49:27,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:27,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:30,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:32,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:32,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-14 02:49:32,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:49:32,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 02:49:32,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:32,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-10-14 02:49:32,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 02:49:32,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:49:32,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:32,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:32,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:32,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:49:32,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:32,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:49:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:49:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:49:32,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:49:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:32,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:32,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:32,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:49:32,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:32,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 02:49:32,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:32,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:49:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:49:32,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:49:32,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 02:49:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:32,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:32,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:32,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:49:32,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:32,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 02:49:32,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:32,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:49:32,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:49:32,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-14 02:49:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:32,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:32,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 02:49:32,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:32,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 02:49:32,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:32,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:32,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:32,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:49:32,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 02:49:32,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:49:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 02:49:32,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743851869] [2020-10-14 02:49:32,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:49:32,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:49:32,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478542415] [2020-10-14 02:49:32,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:49:32,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:32,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:49:32,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:49:32,957 INFO L87 Difference]: Start difference. First operand 151805 states and 199050 transitions. Second operand 7 states.