/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/Problem01_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:39:06,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:39:06,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:39:06,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:39:06,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:39:06,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:39:06,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:39:06,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:39:06,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:39:06,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:39:06,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:39:06,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:39:06,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:39:06,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:39:06,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:39:06,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:39:06,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:39:06,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:39:06,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:39:06,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:39:06,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:39:06,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:39:06,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:39:06,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:39:06,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:39:06,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:39:06,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:39:06,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:39:06,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:39:06,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:39:06,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:39:06,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:39:06,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:39:06,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:39:06,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:39:06,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:39:06,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:39:06,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:39:06,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:39:06,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:39:06,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:39:06,923 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 21:39:06,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:39:06,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:39:06,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:39:06,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:39:06,951 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:39:06,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:39:06,951 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:39:06,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:39:06,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:39:06,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:39:06,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:39:06,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:39:06,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:39:06,952 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:39:06,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:39:06,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:39:06,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:39:06,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:39:06,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:39:06,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:39:06,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:39:06,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:39:06,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:39:06,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:39:06,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:39:06,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:39:06,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:39:06,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:39:06,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:39:06,956 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 21:39:07,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:39:07,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:39:07,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:39:07,425 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:39:07,426 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:39:07,427 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-24 21:39:07,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e5df828a/ec40591204d44fbfb60a7b61c7d74c12/FLAGba5b34798 [2020-09-24 21:39:08,245 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:39:08,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-24 21:39:08,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e5df828a/ec40591204d44fbfb60a7b61c7d74c12/FLAGba5b34798 [2020-09-24 21:39:08,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e5df828a/ec40591204d44fbfb60a7b61c7d74c12 [2020-09-24 21:39:08,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:39:08,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:39:08,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:39:08,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:39:08,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:39:08,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:39:08" (1/1) ... [2020-09-24 21:39:08,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:08, skipping insertion in model container [2020-09-24 21:39:08,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:39:08" (1/1) ... [2020-09-24 21:39:08,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:39:08,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:39:09,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:39:09,096 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:39:09,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:39:09,341 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:39:09,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:09 WrapperNode [2020-09-24 21:39:09,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:39:09,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:39:09,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:39:09,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:39:09,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:09" (1/1) ... [2020-09-24 21:39:09,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:09" (1/1) ... [2020-09-24 21:39:09,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:09" (1/1) ... [2020-09-24 21:39:09,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:09" (1/1) ... [2020-09-24 21:39:09,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:09" (1/1) ... [2020-09-24 21:39:09,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:09" (1/1) ... [2020-09-24 21:39:09,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:09" (1/1) ... [2020-09-24 21:39:09,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:39:09,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:39:09,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:39:09,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:39:09,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:09" (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 21:39:09,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:39:09,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:39:09,581 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:39:09,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:39:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:39:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:39:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:39:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:39:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:39:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:39:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:39:10,983 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:39:10,984 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:39:10,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:39:10 BoogieIcfgContainer [2020-09-24 21:39:10,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:39:10,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:39:10,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:39:11,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:39:11,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:39:08" (1/3) ... [2020-09-24 21:39:11,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:39:11, skipping insertion in model container [2020-09-24 21:39:11,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:09" (2/3) ... [2020-09-24 21:39:11,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:39:11, skipping insertion in model container [2020-09-24 21:39:11,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:39:10" (3/3) ... [2020-09-24 21:39:11,006 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2020-09-24 21:39:11,018 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:39:11,030 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:39:11,053 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:39:11,089 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:39:11,089 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:39:11,089 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:39:11,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:39:11,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:39:11,090 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:39:11,090 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:39:11,090 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:39:11,121 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 21:39:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-24 21:39:11,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:11,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:39:11,148 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:11,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:11,154 INFO L82 PathProgramCache]: Analyzing trace with hash 149723165, now seen corresponding path program 1 times [2020-09-24 21:39:11,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:11,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036488076] [2020-09-24 21:39:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:11,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:11,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:13,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:15,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:16,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:16,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-24 21:39:16,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:39:16,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 21:39:16,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:16,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:39:16,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:39:16,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:39:16,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:39:17,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:17,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:17,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:17,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:17,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 21:39:17,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:39:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:17,540 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 21:39:17,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036488076] [2020-09-24 21:39:17,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:39:17,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 21:39:17,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505796190] [2020-09-24 21:39:17,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:39:17,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:17,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:39:17,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:39:17,572 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 21:39:18,232 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-24 21:39:18,509 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-09-24 21:39:18,819 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-09-24 21:39:19,313 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-09-24 21:39:20,331 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-09-24 21:39:20,865 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-09-24 21:39:21,730 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-09-24 21:39:22,379 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-09-24 21:39:23,399 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-09-24 21:39:26,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:26,323 INFO L93 Difference]: Finished difference Result 1700 states and 2421 transitions. [2020-09-24 21:39:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 21:39:26,325 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 137 [2020-09-24 21:39:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:26,361 INFO L225 Difference]: With dead ends: 1700 [2020-09-24 21:39:26,361 INFO L226 Difference]: Without dead ends: 1101 [2020-09-24 21:39:26,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=384, Invalid=948, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 21:39:26,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-24 21:39:26,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 985. [2020-09-24 21:39:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 21:39:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1148 transitions. [2020-09-24 21:39:26,525 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1148 transitions. Word has length 137 [2020-09-24 21:39:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:26,526 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1148 transitions. [2020-09-24 21:39:26,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:39:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1148 transitions. [2020-09-24 21:39:26,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 21:39:26,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:26,539 INFO L422 BasicCegarLoop]: trace histogram [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, 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 21:39:26,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:39:26,540 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:26,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:26,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1076336430, now seen corresponding path program 1 times [2020-09-24 21:39:26,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:26,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050415094] [2020-09-24 21:39:26,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:26,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:27,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:27,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:28,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:28,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:29,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:29,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:31,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:31,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-24 21:39:31,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:39:31,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 21:39:31,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:39:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:39:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:39:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:39:31,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:31,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:31,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:31,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:31,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:31,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 21:39:31,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:31,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:31,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:31,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:39:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:31,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:31,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:32,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:32,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:39:32,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:39:32,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 21:39:32,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:32,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:39:32,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:32,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:39:32,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:39:32,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050415094] [2020-09-24 21:39:32,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:39:32,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:39:32,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409357905] [2020-09-24 21:39:32,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:39:32,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:32,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:39:32,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:39:32,593 INFO L87 Difference]: Start difference. First operand 985 states and 1148 transitions. Second operand 13 states. [2020-09-24 21:39:33,861 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-09-24 21:39:34,369 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-09-24 21:39:34,506 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-09-24 21:39:34,765 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-09-24 21:39:36,740 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-09-24 21:39:40,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:40,391 INFO L93 Difference]: Finished difference Result 2792 states and 3410 transitions. [2020-09-24 21:39:40,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 21:39:40,392 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 158 [2020-09-24 21:39:40,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:40,402 INFO L225 Difference]: With dead ends: 2792 [2020-09-24 21:39:40,402 INFO L226 Difference]: Without dead ends: 1338 [2020-09-24 21:39:40,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=377, Invalid=883, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 21:39:40,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2020-09-24 21:39:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1118. [2020-09-24 21:39:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1118 states. [2020-09-24 21:39:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1287 transitions. [2020-09-24 21:39:40,458 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1287 transitions. Word has length 158 [2020-09-24 21:39:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:40,458 INFO L479 AbstractCegarLoop]: Abstraction has 1118 states and 1287 transitions. [2020-09-24 21:39:40,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:39:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1287 transitions. [2020-09-24 21:39:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-24 21:39:40,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:40,464 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:39:40,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:39:40,465 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:40,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:40,465 INFO L82 PathProgramCache]: Analyzing trace with hash 47797321, now seen corresponding path program 1 times [2020-09-24 21:39:40,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:40,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592739186] [2020-09-24 21:39:40,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:40,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:40,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:41,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:41,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:42,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:43,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:43,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:44,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:45,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:45,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 21:39:45,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:39:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:39:45,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:39:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:39:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-24 21:39:45,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:45,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:45,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:45,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:45,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:45,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:45,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 21:39:45,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:45,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:39:45,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:45,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:45,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:45,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:39:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:45,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:45,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:45,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:39:45,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:39:45,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 21:39:45,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:39:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:39:45,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:45,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 21:39:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:45,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:45,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:46,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:46,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:39:46,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:39:46,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 21:39:46,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:39:46,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:46,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:39:46,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:39:46,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592739186] [2020-09-24 21:39:46,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:39:46,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 21:39:46,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411100704] [2020-09-24 21:39:46,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:39:46,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:46,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:39:46,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:39:46,412 INFO L87 Difference]: Start difference. First operand 1118 states and 1287 transitions. Second operand 14 states. [2020-09-24 21:39:47,417 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-09-24 21:39:53,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:53,269 INFO L93 Difference]: Finished difference Result 3515 states and 4176 transitions. [2020-09-24 21:39:53,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 21:39:53,270 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 175 [2020-09-24 21:39:53,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:53,287 INFO L225 Difference]: With dead ends: 3515 [2020-09-24 21:39:53,287 INFO L226 Difference]: Without dead ends: 2360 [2020-09-24 21:39:53,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=350, Invalid=772, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 21:39:53,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2020-09-24 21:39:53,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 1878. [2020-09-24 21:39:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2020-09-24 21:39:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2114 transitions. [2020-09-24 21:39:53,371 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2114 transitions. Word has length 175 [2020-09-24 21:39:53,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:53,372 INFO L479 AbstractCegarLoop]: Abstraction has 1878 states and 2114 transitions. [2020-09-24 21:39:53,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:39:53,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2114 transitions. [2020-09-24 21:39:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-24 21:39:53,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:53,380 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:39:53,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:39:53,380 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:53,381 INFO L82 PathProgramCache]: Analyzing trace with hash 2128811602, now seen corresponding path program 1 times [2020-09-24 21:39:53,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:53,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024510743] [2020-09-24 21:39:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:53,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:54,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:55,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:56,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:57,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:57,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:58,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:58,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 21:39:58,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:39:58,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 21:39:58,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 21:39:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:39:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-24 21:39:58,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0