/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/Problem14_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:46:38,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:46:38,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:46:38,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:46:38,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:46:38,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:46:38,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:46:38,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:46:38,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:46:38,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:46:38,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:46:38,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:46:38,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:46:38,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:46:38,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:46:38,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:46:38,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:46:38,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:46:38,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:46:38,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:46:38,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:46:38,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:46:38,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:46:38,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:46:38,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:46:38,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:46:38,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:46:38,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:46:38,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:46:38,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:46:38,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:46:38,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:46:38,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:46:38,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:46:38,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:46:38,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:46:38,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:46:38,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:46:38,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:46:38,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:46:38,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:46:38,467 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 21:46:38,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:46:38,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:46:38,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:46:38,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:46:38,495 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:46:38,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:46:38,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:46:38,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:46:38,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:46:38,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:46:38,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:46:38,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:46:38,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:46:38,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:46:38,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:46:38,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:46:38,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:46:38,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:46:38,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:46:38,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:46:38,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:46:38,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:46:38,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:46:38,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:46:38,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:46:38,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:46:38,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:46:38,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:46:38,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:46:38,500 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 21:46:38,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:46:38,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:46:38,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:46:38,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:46:38,980 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:46:38,981 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-24 21:46:39,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04347f7da/0e2aca1a64be4a39a680a54738baab9e/FLAG6524c2eab [2020-09-24 21:46:39,733 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:46:39,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-24 21:46:39,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04347f7da/0e2aca1a64be4a39a680a54738baab9e/FLAG6524c2eab [2020-09-24 21:46:39,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04347f7da/0e2aca1a64be4a39a680a54738baab9e [2020-09-24 21:46:39,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:46:39,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:46:40,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:40,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:46:40,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:46:40,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:39" (1/1) ... [2020-09-24 21:46:40,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58419e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:40, skipping insertion in model container [2020-09-24 21:46:40,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:39" (1/1) ... [2020-09-24 21:46:40,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:46:40,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:46:40,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:40,733 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:46:40,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:40,877 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:46:40,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:40 WrapperNode [2020-09-24 21:46:40,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:40,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:46:40,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:46:40,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:46:40,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:40" (1/1) ... [2020-09-24 21:46:40,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:40" (1/1) ... [2020-09-24 21:46:40,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:40" (1/1) ... [2020-09-24 21:46:40,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:40" (1/1) ... [2020-09-24 21:46:40,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:40" (1/1) ... [2020-09-24 21:46:40,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:40" (1/1) ... [2020-09-24 21:46:41,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:40" (1/1) ... [2020-09-24 21:46:41,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:46:41,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:46:41,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:46:41,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:46:41,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:40" (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 21:46:41,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:46:41,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:46:41,140 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:46:41,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:46:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:46:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:46:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:46:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:46:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:46:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:46:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:46:42,772 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:46:42,773 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:46:42,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:42 BoogieIcfgContainer [2020-09-24 21:46:42,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:46:42,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:46:42,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:46:42,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:46:42,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:46:39" (1/3) ... [2020-09-24 21:46:42,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20eb0359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:42, skipping insertion in model container [2020-09-24 21:46:42,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:40" (2/3) ... [2020-09-24 21:46:42,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20eb0359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:42, skipping insertion in model container [2020-09-24 21:46:42,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:42" (3/3) ... [2020-09-24 21:46:42,793 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label38.c [2020-09-24 21:46:42,805 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:46:42,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:46:42,843 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:46:42,887 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:46:42,888 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:46:42,890 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:46:42,890 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:46:42,891 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:46:42,891 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:46:42,891 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:46:42,892 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:46:42,926 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-24 21:46:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 21:46:42,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:42,939 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] [2020-09-24 21:46:42,940 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:42,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:42,948 INFO L82 PathProgramCache]: Analyzing trace with hash -496136462, now seen corresponding path program 1 times [2020-09-24 21:46:42,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:42,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973020615] [2020-09-24 21:46:42,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:43,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:43,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:44,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:44,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 21:46:44,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:46:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-24 21:46:44,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:44,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:44,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:44,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:46:44,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:46:44,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:44,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:44,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:44,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:44,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:44,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:46:44,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:44,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:44,397 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 21:46:44,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973020615] [2020-09-24 21:46:44,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:44,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:46:44,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63423609] [2020-09-24 21:46:44,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:46:44,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:44,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:46:44,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:46:44,433 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-24 21:46:48,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:48,373 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-24 21:46:48,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:46:48,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-24 21:46:48,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:48,405 INFO L225 Difference]: With dead ends: 1991 [2020-09-24 21:46:48,406 INFO L226 Difference]: Without dead ends: 1250 [2020-09-24 21:46:48,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:48,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-24 21:46:48,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-24 21:46:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-24 21:46:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-24 21:46:48,535 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 69 [2020-09-24 21:46:48,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:48,535 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-24 21:46:48,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:46:48,536 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-24 21:46:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 21:46:48,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:48,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:48,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:46:48,546 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:48,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:48,546 INFO L82 PathProgramCache]: Analyzing trace with hash -112077510, now seen corresponding path program 1 times [2020-09-24 21:46:48,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:48,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101714540] [2020-09-24 21:46:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:48,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:49,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:49,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:49,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:53,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:53,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 21:46:53,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:46:53,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4503 [2020-09-24 21:46:53,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:46:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-24 21:46:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:53,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:53,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:53,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:53,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:53,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:53,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 21:46:53,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:53,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:53,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:46:53,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:53,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:53,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:53,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 21:46:53,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-24 21:46:53,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 21:46:53,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:53,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101714540] [2020-09-24 21:46:53,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:53,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:46:53,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254480579] [2020-09-24 21:46:53,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:46:53,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:53,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:46:53,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:46:53,811 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 8 states. [2020-09-24 21:46:57,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:57,880 INFO L93 Difference]: Finished difference Result 1556 states and 2015 transitions. [2020-09-24 21:46:57,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:46:57,881 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 156 [2020-09-24 21:46:57,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:57,891 INFO L225 Difference]: With dead ends: 1556 [2020-09-24 21:46:57,892 INFO L226 Difference]: Without dead ends: 1554 [2020-09-24 21:46:57,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:46:57,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2020-09-24 21:46:57,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1188. [2020-09-24 21:46:57,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2020-09-24 21:46:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1548 transitions. [2020-09-24 21:46:57,946 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1548 transitions. Word has length 156 [2020-09-24 21:46:57,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:57,948 INFO L479 AbstractCegarLoop]: Abstraction has 1188 states and 1548 transitions. [2020-09-24 21:46:57,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:46:57,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1548 transitions. [2020-09-24 21:46:57,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-24 21:46:57,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:57,954 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:57,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:46:57,954 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:57,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1811384198, now seen corresponding path program 1 times [2020-09-24 21:46:57,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:57,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949731002] [2020-09-24 21:46:57,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:58,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:58,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:58,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:01,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:01,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:03,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:03,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 21:47:03,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:47:03,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-24 21:47:03,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:03,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:47:03,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:47:03,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-24 21:47:03,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:03,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:47:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:03,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:03,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:03,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:47:03,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:03,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:47:03,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:47:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:47:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:03,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:47:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:03,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:03,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:03,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 21:47:03,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:03,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-24 21:47:03,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:47:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 21:47:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:47:03,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949731002] [2020-09-24 21:47:03,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:47:03,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:47:03,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150125627] [2020-09-24 21:47:03,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:47:03,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:47:03,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:47:03,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:47:03,413 INFO L87 Difference]: Start difference. First operand 1188 states and 1548 transitions. Second operand 7 states. [2020-09-24 21:47:06,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:47:06,329 INFO L93 Difference]: Finished difference Result 3211 states and 4397 transitions. [2020-09-24 21:47:06,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:47:06,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-24 21:47:06,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:47:06,348 INFO L225 Difference]: With dead ends: 3211 [2020-09-24 21:47:06,348 INFO L226 Difference]: Without dead ends: 2038 [2020-09-24 21:47:06,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:47:06,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2020-09-24 21:47:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1777. [2020-09-24 21:47:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1777 states. [2020-09-24 21:47:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2285 transitions. [2020-09-24 21:47:06,428 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2285 transitions. Word has length 171 [2020-09-24 21:47:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:47:06,429 INFO L479 AbstractCegarLoop]: Abstraction has 1777 states and 2285 transitions. [2020-09-24 21:47:06,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:47:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2285 transitions. [2020-09-24 21:47:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-24 21:47:06,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:47:06,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:47:06,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:47:06,441 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:47:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:47:06,444 INFO L82 PathProgramCache]: Analyzing trace with hash 107700592, now seen corresponding path program 1 times [2020-09-24 21:47:06,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:47:06,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669413166] [2020-09-24 21:47:06,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:47:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:06,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:07,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:07,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:08,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:09,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:10,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:11,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:11,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-24 21:47:11,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:47:11,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 21:47:11,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:11,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:47:11,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:47:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 21:47:11,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:11,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:47:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:11,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:11,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:11,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:47:11,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:11,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:47:11,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:47:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:47:11,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:11,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:47:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:11,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:11,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:11,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 21:47:11,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:11,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 21:47:11,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:47:11,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:11,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 21:47:11,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:11,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-24 21:47:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:11,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:11,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:11,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 21:47:11,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:11,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 21:47:11,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:47:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-24 21:47:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:47:11,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 106 proven. 67 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 21:47:12,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669413166] [2020-09-24 21:47:12,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:47:12,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:47:12,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848792630] [2020-09-24 21:47:12,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:47:12,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:47:12,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:47:12,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:47:12,017 INFO L87 Difference]: Start difference. First operand 1777 states and 2285 transitions. Second operand 7 states. [2020-09-24 21:47:15,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:47:15,221 INFO L93 Difference]: Finished difference Result 4467 states and 5922 transitions. [2020-09-24 21:47:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:47:15,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-09-24 21:47:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:47:15,243 INFO L225 Difference]: With dead ends: 4467 [2020-09-24 21:47:15,243 INFO L226 Difference]: Without dead ends: 2705 [2020-09-24 21:47:15,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 21:47:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2020-09-24 21:47:15,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2646. [2020-09-24 21:47:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2646 states. [2020-09-24 21:47:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3304 transitions. [2020-09-24 21:47:15,334 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3304 transitions. Word has length 245 [2020-09-24 21:47:15,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:47:15,334 INFO L479 AbstractCegarLoop]: Abstraction has 2646 states and 3304 transitions. [2020-09-24 21:47:15,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:47:15,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3304 transitions. [2020-09-24 21:47:15,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-24 21:47:15,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:47:15,339 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:47:15,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:47:15,340 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:47:15,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:47:15,340 INFO L82 PathProgramCache]: Analyzing trace with hash -144439824, now seen corresponding path program 1 times [2020-09-24 21:47:15,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:47:15,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484950622] [2020-09-24 21:47:15,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:47:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:15,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:15,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:16,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:16,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:16,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:17,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:17,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:20,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:20,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-09-24 21:47:20,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:47:20,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 21:47:20,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:20,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:47:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:47:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 21:47:20,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:47:20,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:47:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:20,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:20,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:20,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:47:20,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:47:20,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:47:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:20,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:47:20,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:20,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:47:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:20,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:20,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:20,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 21:47:20,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:20,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 21:47:20,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:47:20,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:20,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 21:47:20,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:21,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-24 21:47:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:21,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:21,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:21,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:21,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 21:47:21,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:47:21,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-24 21:47:21,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:21,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:47:21,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:21,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 21:47:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 116 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:47:22,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484950622] [2020-09-24 21:47:22,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:47:22,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:47:22,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95863374] [2020-09-24 21:47:22,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:47:22,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:47:22,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:47:22,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:47:22,295 INFO L87 Difference]: Start difference. First operand 2646 states and 3304 transitions. Second operand 12 states. [2020-09-24 21:47:26,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:47:26,737 INFO L93 Difference]: Finished difference Result 5430 states and 6814 transitions. [2020-09-24 21:47:26,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 21:47:26,738 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 256 [2020-09-24 21:47:26,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:47:26,751 INFO L225 Difference]: With dead ends: 5430 [2020-09-24 21:47:26,751 INFO L226 Difference]: Without dead ends: 2919 [2020-09-24 21:47:26,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:47:26,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-09-24 21:47:26,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2861. [2020-09-24 21:47:26,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2861 states. [2020-09-24 21:47:26,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 3523 transitions. [2020-09-24 21:47:26,830 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 3523 transitions. Word has length 256 [2020-09-24 21:47:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:47:26,830 INFO L479 AbstractCegarLoop]: Abstraction has 2861 states and 3523 transitions. [2020-09-24 21:47:26,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:47:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 3523 transitions. [2020-09-24 21:47:26,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-09-24 21:47:26,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:47:26,838 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:47:26,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:47:26,838 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:47:26,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:47:26,839 INFO L82 PathProgramCache]: Analyzing trace with hash -246422380, now seen corresponding path program 1 times [2020-09-24 21:47:26,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:47:26,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545034965] [2020-09-24 21:47:26,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:47:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:27,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:27,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:27,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking...