/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:18,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:18,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:18,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:18,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:18,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:18,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:19,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:19,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:19,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:19,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:19,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:19,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:19,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:19,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:19,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:19,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:19,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:19,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:19,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:19,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:19,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:19,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:19,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:19,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:19,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:19,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:19,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:19,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:19,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:44:19,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:44:19,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:44:19,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:44:19,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:44:19,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:44:19,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:44:19,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:44:19,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:44:19,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:19,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:19,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:19,055 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:44:19,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:19,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:19,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:19,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:19,109 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:19,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:19,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:19,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:19,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:19,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:19,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:19,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:19,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:19,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:19,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:19,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:19,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:19,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:19,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:19,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:19,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:19,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:19,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:19,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:19,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:19,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:19,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:19,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:19,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:19,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:44:19,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:19,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:19,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:19,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:19,576 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:19,577 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-24 21:44:19,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45d240b44/78e9365ae87f45268c9cd17c28fd3337/FLAG305dbfedb [2020-09-24 21:44:20,330 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:20,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-24 21:44:20,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45d240b44/78e9365ae87f45268c9cd17c28fd3337/FLAG305dbfedb [2020-09-24 21:44:20,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45d240b44/78e9365ae87f45268c9cd17c28fd3337 [2020-09-24 21:44:20,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:20,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:20,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:20,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:20,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:20,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:20" (1/1) ... [2020-09-24 21:44:20,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fe5b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:20, skipping insertion in model container [2020-09-24 21:44:20,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:20" (1/1) ... [2020-09-24 21:44:20,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:20,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:21,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:21,188 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:21,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:21,348 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:21,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:21 WrapperNode [2020-09-24 21:44:21,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:21,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:21,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:21,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:21,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:21" (1/1) ... [2020-09-24 21:44:21,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:21" (1/1) ... [2020-09-24 21:44:21,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:21" (1/1) ... [2020-09-24 21:44:21,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:21" (1/1) ... [2020-09-24 21:44:21,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:21" (1/1) ... [2020-09-24 21:44:21,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:21" (1/1) ... [2020-09-24 21:44:21,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:21" (1/1) ... [2020-09-24 21:44:21,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:21,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:21,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:21,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:21,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:22,984 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:22,984 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:22,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:22 BoogieIcfgContainer [2020-09-24 21:44:22,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:22,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:22,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:23,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:23,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:20" (1/3) ... [2020-09-24 21:44:23,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56783f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:23, skipping insertion in model container [2020-09-24 21:44:23,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:21" (2/3) ... [2020-09-24 21:44:23,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56783f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:23, skipping insertion in model container [2020-09-24 21:44:23,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:22" (3/3) ... [2020-09-24 21:44:23,005 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label04.c [2020-09-24 21:44:23,019 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:23,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:23,062 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:23,102 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:23,102 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:23,102 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:23,103 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:23,103 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:23,103 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:23,103 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:23,104 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:23,139 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:23,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 21:44:23,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:23,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:23,156 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:23,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:23,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1435975873, now seen corresponding path program 1 times [2020-09-24 21:44:23,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:23,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997235313] [2020-09-24 21:44:23,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:23,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:23,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:24,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:24,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 21:44:24,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:24,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-09-24 21:44:24,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:24,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:24,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:44:24,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 21:44:24,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:24,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:24,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:24,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:24,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:24,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:44:24,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:24,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:44:24,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:24,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997235313] [2020-09-24 21:44:24,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:24,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:44:24,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319951455] [2020-09-24 21:44:24,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:44:24,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:24,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:44:24,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:44:24,343 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:44:26,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:26,341 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-24 21:44:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:44:26,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-24 21:44:26,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:26,378 INFO L225 Difference]: With dead ends: 1069 [2020-09-24 21:44:26,379 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 21:44:26,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:44:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 21:44:26,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-24 21:44:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-24 21:44:26,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-24 21:44:26,546 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 85 [2020-09-24 21:44:26,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:26,548 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-24 21:44:26,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:44:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-24 21:44:26,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 21:44:26,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:26,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:44:26,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:26,569 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:26,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:26,569 INFO L82 PathProgramCache]: Analyzing trace with hash -2117933451, now seen corresponding path program 1 times [2020-09-24 21:44:26,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:26,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703004742] [2020-09-24 21:44:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:26,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:26,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:27,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:29,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:29,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:29,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 21:44:29,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:44:29,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2576 [2020-09-24 21:44:29,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:29,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:29,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:29,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 21:44:29,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:29,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:29,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:29,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:29,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:29,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:29,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:44:29,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:29,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:29,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:29,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:29,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:29,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:29,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 21:44:29,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:29,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-24 21:44:29,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:29,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:44:29,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:29,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703004742] [2020-09-24 21:44:29,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:29,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:44:29,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418590685] [2020-09-24 21:44:29,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:44:29,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:29,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:44:29,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:44:29,567 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-24 21:44:32,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:32,159 INFO L93 Difference]: Finished difference Result 1477 states and 1881 transitions. [2020-09-24 21:44:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:44:32,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-24 21:44:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:32,166 INFO L225 Difference]: With dead ends: 1477 [2020-09-24 21:44:32,167 INFO L226 Difference]: Without dead ends: 949 [2020-09-24 21:44:32,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:44:32,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-09-24 21:44:32,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 888. [2020-09-24 21:44:32,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-09-24 21:44:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1123 transitions. [2020-09-24 21:44:32,225 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1123 transitions. Word has length 165 [2020-09-24 21:44:32,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:32,226 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1123 transitions. [2020-09-24 21:44:32,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:44:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1123 transitions. [2020-09-24 21:44:32,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-24 21:44:32,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:32,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:44:32,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:44:32,230 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:32,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:32,231 INFO L82 PathProgramCache]: Analyzing trace with hash 185368306, now seen corresponding path program 1 times [2020-09-24 21:44:32,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:32,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576266211] [2020-09-24 21:44:32,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:32,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:32,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:33,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:34,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:34,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:37,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 21:44:37,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:44:37,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:44:37,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:44:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:44:37,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:37,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:37,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:37,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 21:44:37,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:44:37,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:44:37,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:37,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:37,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:44:37,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-24 21:44:37,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:44:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:44:37,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:44:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 45 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:38,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576266211] [2020-09-24 21:44:38,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:38,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:44:38,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414165373] [2020-09-24 21:44:38,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:44:38,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:38,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:44:38,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:44:38,013 INFO L87 Difference]: Start difference. First operand 888 states and 1123 transitions. Second operand 12 states. [2020-09-24 21:44:40,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:40,885 INFO L93 Difference]: Finished difference Result 2011 states and 2589 transitions. [2020-09-24 21:44:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:44:40,886 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 174 [2020-09-24 21:44:40,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:40,894 INFO L225 Difference]: With dead ends: 2011 [2020-09-24 21:44:40,895 INFO L226 Difference]: Without dead ends: 1110 [2020-09-24 21:44:40,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:44:40,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2020-09-24 21:44:40,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1046. [2020-09-24 21:44:40,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-09-24 21:44:40,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1312 transitions. [2020-09-24 21:44:40,955 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1312 transitions. Word has length 174 [2020-09-24 21:44:40,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:40,956 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1312 transitions. [2020-09-24 21:44:40,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:44:40,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1312 transitions. [2020-09-24 21:44:40,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 21:44:40,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:40,965 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:40,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:44:40,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:40,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:40,968 INFO L82 PathProgramCache]: Analyzing trace with hash 969467690, now seen corresponding path program 1 times [2020-09-24 21:44:40,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:40,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563249790] [2020-09-24 21:44:40,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:41,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:41,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:41,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:44,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:44,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 21:44:44,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:44:44,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3130 [2020-09-24 21:44:44,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:44:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-09-24 21:44:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 21:44:44,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:44,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:44,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:44,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:44,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:44,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:44:44,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:44,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:44,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:44,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:44,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:44,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:44,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:44,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 21:44:44,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:44,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-24 21:44:44,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 21:44:44,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:44,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563249790] [2020-09-24 21:44:44,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:44,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:44:44,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398080198] [2020-09-24 21:44:44,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:44:44,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:44,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:44:44,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:44:44,599 INFO L87 Difference]: Start difference. First operand 1046 states and 1312 transitions. Second operand 8 states. [2020-09-24 21:44:48,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:48,063 INFO L93 Difference]: Finished difference Result 2360 states and 2980 transitions. [2020-09-24 21:44:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:44:48,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 176 [2020-09-24 21:44:48,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:48,077 INFO L225 Difference]: With dead ends: 2360 [2020-09-24 21:44:48,078 INFO L226 Difference]: Without dead ends: 1485 [2020-09-24 21:44:48,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:44:48,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2020-09-24 21:44:48,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1461. [2020-09-24 21:44:48,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2020-09-24 21:44:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1784 transitions. [2020-09-24 21:44:48,133 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1784 transitions. Word has length 176 [2020-09-24 21:44:48,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:48,134 INFO L479 AbstractCegarLoop]: Abstraction has 1461 states and 1784 transitions. [2020-09-24 21:44:48,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:44:48,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1784 transitions. [2020-09-24 21:44:48,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 21:44:48,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:48,142 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:48,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:44:48,143 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:48,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:48,143 INFO L82 PathProgramCache]: Analyzing trace with hash -478403010, now seen corresponding path program 1 times [2020-09-24 21:44:48,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:48,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819167089] [2020-09-24 21:44:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:48,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:48,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:48,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:53,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-24 21:44:53,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:44:53,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 21:44:53,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:53,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:44:53,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:53,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-24 21:44:53,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:53,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:53,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:53,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 21:44:53,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:44:53,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:53,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:53,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:53,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 21:44:53,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-09-24 21:44:53,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:44:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 21:44:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 51 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:54,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819167089] [2020-09-24 21:44:54,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:54,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:44:54,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887301385] [2020-09-24 21:44:54,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:44:54,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:54,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:44:54,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:44:54,175 INFO L87 Difference]: Start difference. First operand 1461 states and 1784 transitions. Second operand 12 states. [2020-09-24 21:44:58,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:58,208 INFO L93 Difference]: Finished difference Result 3169 states and 4070 transitions. [2020-09-24 21:44:58,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:44:58,209 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 193 [2020-09-24 21:44:58,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:58,232 INFO L225 Difference]: With dead ends: 3169 [2020-09-24 21:44:58,232 INFO L226 Difference]: Without dead ends: 2269 [2020-09-24 21:44:58,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:44:58,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2020-09-24 21:44:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2145. [2020-09-24 21:44:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2020-09-24 21:44:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 2688 transitions. [2020-09-24 21:44:58,338 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 2688 transitions. Word has length 193 [2020-09-24 21:44:58,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:58,338 INFO L479 AbstractCegarLoop]: Abstraction has 2145 states and 2688 transitions. [2020-09-24 21:44:58,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:44:58,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 2688 transitions. [2020-09-24 21:44:58,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-24 21:44:58,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:58,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:44:58,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:44:58,344 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:58,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:58,344 INFO L82 PathProgramCache]: Analyzing trace with hash -2064960978, now seen corresponding path program 1 times [2020-09-24 21:44:58,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:58,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837360176] [2020-09-24 21:44:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:58,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:02,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:03,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:03,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:03,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-24 21:45:03,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:45:03,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 21:45:03,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:45:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 21:45:03,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:03,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:03,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:03,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:45:03,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:45:03,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:03,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:03,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:03,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:03,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 21:45:03,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:03,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-24 21:45:03,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 21:45:03,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:03,957 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:03,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837360176] [2020-09-24 21:45:03,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:03,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:03,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970041713] [2020-09-24 21:45:03,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:03,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:03,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:03,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:03,960 INFO L87 Difference]: Start difference. First operand 2145 states and 2688 transitions. Second operand 7 states. [2020-09-24 21:45:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:06,411 INFO L93 Difference]: Finished difference Result 4574 states and 6068 transitions. [2020-09-24 21:45:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:45:06,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-09-24 21:45:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:06,425 INFO L225 Difference]: With dead ends: 4574 [2020-09-24 21:45:06,426 INFO L226 Difference]: Without dead ends: 2594 [2020-09-24 21:45:06,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:45:06,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2020-09-24 21:45:06,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2358. [2020-09-24 21:45:06,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2358 states. [2020-09-24 21:45:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 2963 transitions. [2020-09-24 21:45:06,501 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 2963 transitions. Word has length 207 [2020-09-24 21:45:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:06,502 INFO L479 AbstractCegarLoop]: Abstraction has 2358 states and 2963 transitions. [2020-09-24 21:45:06,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:06,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 2963 transitions. [2020-09-24 21:45:06,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-24 21:45:06,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:06,511 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:45:06,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:45:06,512 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1609125249, now seen corresponding path program 1 times [2020-09-24 21:45:06,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:06,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482276658] [2020-09-24 21:45:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking...