/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=SMALLEST --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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:24:24,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:24:24,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:24:24,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:24:24,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:24:24,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:24:24,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:24:24,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:24:24,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:24:24,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:24:24,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:24:24,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:24:24,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:24:24,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:24:24,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:24:24,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:24:24,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:24:24,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:24:24,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:24:24,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:24:24,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:24:24,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:24:24,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:24:24,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:24:24,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:24:24,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:24:24,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:24:24,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:24:24,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:24:24,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:24:24,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:24:24,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:24:24,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:24:24,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:24:24,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:24:24,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:24:24,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:24:24,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:24:24,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:24:24,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:24:24,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:24:24,304 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 18:24:24,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:24:24,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:24:24,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:24:24,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:24:24,333 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:24:24,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:24:24,334 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:24:24,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:24:24,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:24:24,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:24:24,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:24:24,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:24:24,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:24:24,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:24:24,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:24:24,336 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:24:24,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:24:24,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:24:24,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:24:24,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:24:24,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:24:24,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:24:24,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:24:24,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:24:24,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:24:24,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:24:24,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:24:24,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:24:24,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:24:24,339 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:24:24,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:24:24,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:24:24,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:24:24,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:24:24,848 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:24:24,849 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-24 18:24:24,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ab719f38/552ed2cc13244ed190c012eaf68f2a16/FLAGfc2f9812d [2020-09-24 18:24:25,607 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:24:25,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-24 18:24:25,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ab719f38/552ed2cc13244ed190c012eaf68f2a16/FLAGfc2f9812d [2020-09-24 18:24:25,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ab719f38/552ed2cc13244ed190c012eaf68f2a16 [2020-09-24 18:24:25,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:24:25,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:24:25,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:25,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:24:25,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:24:25,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:25" (1/1) ... [2020-09-24 18:24:25,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc51459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25, skipping insertion in model container [2020-09-24 18:24:25,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:25" (1/1) ... [2020-09-24 18:24:25,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:24:25,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:24:26,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:26,505 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:24:26,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:26,729 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:24:26,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:26 WrapperNode [2020-09-24 18:24:26,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:26,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:24:26,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:24:26,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:24:26,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:26" (1/1) ... [2020-09-24 18:24:26,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:26" (1/1) ... [2020-09-24 18:24:26,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:26" (1/1) ... [2020-09-24 18:24:26,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:26" (1/1) ... [2020-09-24 18:24:26,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:26" (1/1) ... [2020-09-24 18:24:26,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:26" (1/1) ... [2020-09-24 18:24:26,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:26" (1/1) ... [2020-09-24 18:24:26,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:24:26,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:24:26,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:24:26,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:24:26,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:26" (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 18:24:26,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:24:26,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:24:26,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:24:26,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:24:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:24:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:24:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:24:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:24:26,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:24:26,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:24:26,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:24:28,477 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:24:28,477 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:24:28,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:28 BoogieIcfgContainer [2020-09-24 18:24:28,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:24:28,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:24:28,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:24:28,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:24:28,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:24:25" (1/3) ... [2020-09-24 18:24:28,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c90c594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:28, skipping insertion in model container [2020-09-24 18:24:28,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:26" (2/3) ... [2020-09-24 18:24:28,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c90c594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:28, skipping insertion in model container [2020-09-24 18:24:28,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:28" (3/3) ... [2020-09-24 18:24:28,498 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label17.c [2020-09-24 18:24:28,510 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:24:28,522 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:24:28,545 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:24:28,583 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:24:28,583 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:24:28,583 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:24:28,583 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:24:28,584 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:24:28,584 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:24:28,584 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:24:28,584 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:24:28,617 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:24:28,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 18:24:28,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:28,629 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] [2020-09-24 18:24:28,630 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:28,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:28,638 INFO L82 PathProgramCache]: Analyzing trace with hash -796596049, now seen corresponding path program 1 times [2020-09-24 18:24:28,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:28,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498190326] [2020-09-24 18:24:28,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:28,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:29,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:29,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:29,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:29,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 18:24:29,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:24:29,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-24 18:24:29,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:24:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:24:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 18:24:29,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:24:29,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:29,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:29,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:29,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:29,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:29,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:24:29,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:24:29,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:29,615 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 18:24:29,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498190326] [2020-09-24 18:24:29,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:24:29,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:24:29,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744285941] [2020-09-24 18:24:29,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:29,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:29,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:29,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:29,649 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 18:24:32,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:32,517 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-24 18:24:32,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:24:32,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-09-24 18:24:32,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:32,547 INFO L225 Difference]: With dead ends: 1226 [2020-09-24 18:24:32,547 INFO L226 Difference]: Without dead ends: 707 [2020-09-24 18:24:32,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:32,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-24 18:24:32,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-24 18:24:32,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 18:24:32,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-24 18:24:32,681 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 49 [2020-09-24 18:24:32,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:32,682 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-24 18:24:32,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:32,682 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-24 18:24:32,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-24 18:24:32,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:32,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:32,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:24:32,696 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:32,696 INFO L82 PathProgramCache]: Analyzing trace with hash -826547529, now seen corresponding path program 1 times [2020-09-24 18:24:32,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:32,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332287442] [2020-09-24 18:24:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:32,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:33,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:33,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:34,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:37,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:37,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-24 18:24:37,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:24:37,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-24 18:24:37,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:37,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:37,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-09-24 18:24:37,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:24:37,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:37,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:37,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:37,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:37,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:37,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:24:37,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:37,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:37,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:37,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:38,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:38,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:38,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 18:24:38,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:38,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-24 18:24:38,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:38,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:38,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-24 18:24:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 18:24:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:38,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332287442] [2020-09-24 18:24:38,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:38,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:38,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121549633] [2020-09-24 18:24:38,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:38,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:38,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:38,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:38,337 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 5 states. [2020-09-24 18:24:40,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:40,224 INFO L93 Difference]: Finished difference Result 1919 states and 2650 transitions. [2020-09-24 18:24:40,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:40,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-24 18:24:40,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:40,234 INFO L225 Difference]: With dead ends: 1919 [2020-09-24 18:24:40,235 INFO L226 Difference]: Without dead ends: 1239 [2020-09-24 18:24:40,239 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 [2020-09-24 18:24:40,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-09-24 18:24:40,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 880. [2020-09-24 18:24:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-09-24 18:24:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1173 transitions. [2020-09-24 18:24:40,291 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1173 transitions. Word has length 178 [2020-09-24 18:24:40,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:40,292 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1173 transitions. [2020-09-24 18:24:40,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:40,292 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1173 transitions. [2020-09-24 18:24:40,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-24 18:24:40,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:40,306 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:24:40,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:24:40,306 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:40,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:40,307 INFO L82 PathProgramCache]: Analyzing trace with hash 557760793, now seen corresponding path program 1 times [2020-09-24 18:24:40,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:40,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907486798] [2020-09-24 18:24:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:40,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:41,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:41,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:41,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:45,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:45,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-24 18:24:45,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:24:45,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 18:24:45,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-24 18:24:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 18:24:45,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:45,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:45,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:45,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:45,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:45,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:24:45,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:45,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:45,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:45,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:45,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:45,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:24:45,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:45,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 18:24:45,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 18:24:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:45,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 18:24:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:45,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:45,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:24:45,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-24 18:24:45,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:24:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:46,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907486798] [2020-09-24 18:24:46,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:46,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:46,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360480177] [2020-09-24 18:24:46,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:46,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:46,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:46,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:46,241 INFO L87 Difference]: Start difference. First operand 880 states and 1173 transitions. Second operand 7 states. [2020-09-24 18:24:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:49,175 INFO L93 Difference]: Finished difference Result 2502 states and 3565 transitions. [2020-09-24 18:24:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:24:49,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-09-24 18:24:49,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:49,196 INFO L225 Difference]: With dead ends: 2502 [2020-09-24 18:24:49,198 INFO L226 Difference]: Without dead ends: 1637 [2020-09-24 18:24:49,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:24:49,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2020-09-24 18:24:49,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1050. [2020-09-24 18:24:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-09-24 18:24:49,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1340 transitions. [2020-09-24 18:24:49,307 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1340 transitions. Word has length 267 [2020-09-24 18:24:49,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:49,309 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1340 transitions. [2020-09-24 18:24:49,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:49,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1340 transitions. [2020-09-24 18:24:49,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-24 18:24:49,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:49,318 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:24:49,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:24:49,318 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:49,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:49,321 INFO L82 PathProgramCache]: Analyzing trace with hash -577683554, now seen corresponding path program 1 times [2020-09-24 18:24:49,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:49,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070436747] [2020-09-24 18:24:49,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:49,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:53,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:54,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:54,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-24 18:24:54,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:24:54,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 18:24:54,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 18:24:54,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 18:24:54,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:54,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:54,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:54,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:54,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:54,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:24:54,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:54,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:54,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:54,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:54,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:54,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:54,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:24:54,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:54,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 18:24:54,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:54,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:54,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 18:24:54,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 18:24:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:54,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:54,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:54,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:24:54,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-24 18:24:54,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:54,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:24:54,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:55,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070436747] [2020-09-24 18:24:55,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:55,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:55,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315801496] [2020-09-24 18:24:55,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:55,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:55,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:55,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:55,206 INFO L87 Difference]: Start difference. First operand 1050 states and 1340 transitions. Second operand 7 states. [2020-09-24 18:24:57,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:57,381 INFO L93 Difference]: Finished difference Result 2434 states and 3249 transitions. [2020-09-24 18:24:57,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:24:57,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-09-24 18:24:57,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:57,393 INFO L225 Difference]: With dead ends: 2434 [2020-09-24 18:24:57,393 INFO L226 Difference]: Without dead ends: 1409 [2020-09-24 18:24:57,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 18:24:57,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2020-09-24 18:24:57,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1041. [2020-09-24 18:24:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-09-24 18:24:57,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1305 transitions. [2020-09-24 18:24:57,443 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1305 transitions. Word has length 267 [2020-09-24 18:24:57,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:57,443 INFO L479 AbstractCegarLoop]: Abstraction has 1041 states and 1305 transitions. [2020-09-24 18:24:57,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:57,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1305 transitions. [2020-09-24 18:24:57,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-24 18:24:57,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:57,449 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:24:57,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:24:57,450 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:57,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:57,450 INFO L82 PathProgramCache]: Analyzing trace with hash 963100078, now seen corresponding path program 1 times [2020-09-24 18:24:57,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:57,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069345129] [2020-09-24 18:24:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:57,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:58,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:01,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:01,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:02,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-09-24 18:25:02,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:25:02,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 18:25:02,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 18:25:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 18:25:02,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:02,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:02,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:02,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:02,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:25:02,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:02,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:02,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:02,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:02,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:25:02,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:02,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:25:02,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 18:25:02,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 18:25:02,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:02,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 18:25:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:02,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:03,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:03,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:25:03,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:03,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-24 18:25:03,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:03,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:25:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:25:03,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069345129] [2020-09-24 18:25:03,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:03,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:25:03,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318432910] [2020-09-24 18:25:03,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:25:03,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:03,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:25:03,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:25:03,498 INFO L87 Difference]: Start difference. First operand 1041 states and 1305 transitions. Second operand 8 states. [2020-09-24 18:25:06,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:06,536 INFO L93 Difference]: Finished difference Result 3179 states and 4138 transitions. [2020-09-24 18:25:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 18:25:06,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 273 [2020-09-24 18:25:06,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:06,545 INFO L225 Difference]: With dead ends: 3179 [2020-09-24 18:25:06,545 INFO L226 Difference]: Without dead ends: 1457 [2020-09-24 18:25:06,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:25:06,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-09-24 18:25:06,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1441. [2020-09-24 18:25:06,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1441 states. [2020-09-24 18:25:06,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1702 transitions. [2020-09-24 18:25:06,600 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1702 transitions. Word has length 273 [2020-09-24 18:25:06,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:06,600 INFO L479 AbstractCegarLoop]: Abstraction has 1441 states and 1702 transitions. [2020-09-24 18:25:06,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:25:06,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1702 transitions. [2020-09-24 18:25:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-09-24 18:25:06,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:06,610 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:06,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:25:06,610 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:06,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:06,611 INFO L82 PathProgramCache]: Analyzing trace with hash -535160439, now seen corresponding path program 1 times [2020-09-24 18:25:06,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:06,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448694382] [2020-09-24 18:25:06,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:07,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:07,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:11,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:11,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:11,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-09-24 18:25:11,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:25:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:25:11,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-24 18:25:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 18:25:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:11,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:11,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:11,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:11,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:11,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:25:11,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:11,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:11,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:11,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:11,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:11,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:11,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:11,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:11,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 18:25:11,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:11,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:25:11,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:11,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:11,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 18:25:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:12,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:12,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:12,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:25:12,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:12,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 18:25:12,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:12,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:25:12,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:12,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-24 18:25:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:12,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:12,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:25:12,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:12,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-24 18:25:12,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:25:12,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-24 18:25:12,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448694382] [2020-09-24 18:25:12,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:12,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:25:12,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635921107] [2020-09-24 18:25:12,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:25:12,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:12,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:25:12,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:25:12,461 INFO L87 Difference]: Start difference. First operand 1441 states and 1702 transitions. Second operand 7 states.