/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:45:30,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:45:30,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:45:30,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:45:30,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:45:30,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:45:30,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:45:30,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:45:30,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:45:30,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:45:30,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:45:30,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:45:30,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:45:30,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:45:30,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:45:30,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:45:30,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:45:30,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:45:30,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:45:30,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:45:30,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:45:30,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:45:30,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:45:30,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:45:30,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:45:30,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:45:30,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:45:30,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:45:30,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:45:30,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:45:30,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:45:30,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:45:30,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:45:30,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:45:30,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:45:30,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:45:30,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:45:30,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:45:30,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:45:30,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:45:30,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:45:30,963 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 21:45:30,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:45:30,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:45:30,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:45:30,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:45:30,991 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:45:30,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:45:30,992 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:45:30,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:45:30,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:45:30,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:45:30,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:45:30,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:45:30,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:45:30,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:45:30,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:45:30,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:45:30,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:45:30,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:45:30,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:45:30,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:45:30,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:45:30,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:30,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:45:30,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:45:30,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:45:30,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:45:30,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:45:30,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:45:30,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:45:30,998 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 21:45:31,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:45:31,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:45:31,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:45:31,494 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:45:31,495 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:45:31,496 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-24 21:45:31,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/326ec3e93/81e02ab4f65346c58bf01da548ea0512/FLAG810e8f735 [2020-09-24 21:45:32,281 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:45:32,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-24 21:45:32,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/326ec3e93/81e02ab4f65346c58bf01da548ea0512/FLAG810e8f735 [2020-09-24 21:45:32,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/326ec3e93/81e02ab4f65346c58bf01da548ea0512 [2020-09-24 21:45:32,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:45:32,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:45:32,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:32,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:45:32,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:45:32,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:32" (1/1) ... [2020-09-24 21:45:32,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24493d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:32, skipping insertion in model container [2020-09-24 21:45:32,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:32" (1/1) ... [2020-09-24 21:45:32,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:45:32,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:45:33,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:33,246 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:45:33,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:33,425 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:45:33,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:33 WrapperNode [2020-09-24 21:45:33,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:33,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:45:33,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:45:33,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:45:33,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:33" (1/1) ... [2020-09-24 21:45:33,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:33" (1/1) ... [2020-09-24 21:45:33,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:33" (1/1) ... [2020-09-24 21:45:33,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:33" (1/1) ... [2020-09-24 21:45:33,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:33" (1/1) ... [2020-09-24 21:45:33,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:33" (1/1) ... [2020-09-24 21:45:33,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:33" (1/1) ... [2020-09-24 21:45:33,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:45:33,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:45:33,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:45:33,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:45:33,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:33" (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 21:45:33,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:45:33,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:45:33,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:45:33,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:45:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:45:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:45:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:45:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:45:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:45:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:45:33,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:45:35,395 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:45:35,396 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:45:35,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:35 BoogieIcfgContainer [2020-09-24 21:45:35,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:45:35,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:45:35,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:45:35,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:45:35,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:45:32" (1/3) ... [2020-09-24 21:45:35,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5e7dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:35, skipping insertion in model container [2020-09-24 21:45:35,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:33" (2/3) ... [2020-09-24 21:45:35,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5e7dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:35, skipping insertion in model container [2020-09-24 21:45:35,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:35" (3/3) ... [2020-09-24 21:45:35,416 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label37.c [2020-09-24 21:45:35,431 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:45:35,444 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:45:35,472 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:45:35,513 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:45:35,513 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:45:35,513 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:45:35,514 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:45:35,514 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:45:35,514 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:45:35,514 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:45:35,515 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:45:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:45:35,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 21:45:35,561 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:35,562 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] [2020-09-24 21:45:35,563 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:35,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:35,572 INFO L82 PathProgramCache]: Analyzing trace with hash 813911311, now seen corresponding path program 1 times [2020-09-24 21:45:35,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:35,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585316545] [2020-09-24 21:45:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:35,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:37,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:37,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 21:45:37,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:37,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1343 [2020-09-24 21:45:37,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:37,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 21:45:37,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:45:37,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:37,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:37,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:37,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:37,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:37,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:45:37,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:37,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:37,341 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 21:45:37,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585316545] [2020-09-24 21:45:37,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:37,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:45:37,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772499799] [2020-09-24 21:45:37,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:45:37,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:37,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:45:37,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:45:37,374 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:45:39,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:39,569 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-24 21:45:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:45:39,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-24 21:45:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:39,595 INFO L225 Difference]: With dead ends: 1104 [2020-09-24 21:45:39,596 INFO L226 Difference]: Without dead ends: 578 [2020-09-24 21:45:39,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:45:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-24 21:45:39,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-24 21:45:39,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-24 21:45:39,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-24 21:45:39,712 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 73 [2020-09-24 21:45:39,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:39,713 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-24 21:45:39,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:45:39,713 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-24 21:45:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 21:45:39,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:39,722 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:39,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:45:39,723 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:39,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:39,723 INFO L82 PathProgramCache]: Analyzing trace with hash 975789152, now seen corresponding path program 1 times [2020-09-24 21:45:39,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:39,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043643464] [2020-09-24 21:45:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:41,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:44,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-24 21:45:44,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:44,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:45:44,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:45:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-24 21:45:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:44,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:44,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:45,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:45,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:45,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 21:45:45,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:45:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:45:45,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:45,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:45,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:45,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:45,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:45,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-24 21:45:45,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:45,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 26 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:45,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043643464] [2020-09-24 21:45:45,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:45,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:45,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871602633] [2020-09-24 21:45:45,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:45,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:45,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:45,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:45,640 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 9 states. [2020-09-24 21:45:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:49,257 INFO L93 Difference]: Finished difference Result 1267 states and 1577 transitions. [2020-09-24 21:45:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:45:49,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-09-24 21:45:49,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:49,278 INFO L225 Difference]: With dead ends: 1267 [2020-09-24 21:45:49,278 INFO L226 Difference]: Without dead ends: 738 [2020-09-24 21:45:49,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:45:49,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2020-09-24 21:45:49,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 695. [2020-09-24 21:45:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 21:45:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 860 transitions. [2020-09-24 21:45:49,343 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 860 transitions. Word has length 152 [2020-09-24 21:45:49,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:49,347 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 860 transitions. [2020-09-24 21:45:49,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 860 transitions. [2020-09-24 21:45:49,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 21:45:49,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:49,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:49,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:49,364 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:49,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:49,365 INFO L82 PathProgramCache]: Analyzing trace with hash 268099958, now seen corresponding path program 1 times [2020-09-24 21:45:49,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:49,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149526495] [2020-09-24 21:45:49,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:49,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:54,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-24 21:45:54,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:54,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 21:45:54,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:54,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:54,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 21:45:54,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:54,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:54,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:54,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:54,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:54,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:45:54,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:54,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:54,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:54,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:54,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:54,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 21:45:54,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-24 21:45:54,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:54,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:54,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:54,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 21:45:54,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:54,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149526495] [2020-09-24 21:45:54,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:54,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:45:54,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545772805] [2020-09-24 21:45:54,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:45:54,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:54,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:45:54,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:45:54,975 INFO L87 Difference]: Start difference. First operand 695 states and 860 transitions. Second operand 8 states. [2020-09-24 21:45:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:57,463 INFO L93 Difference]: Finished difference Result 1391 states and 1800 transitions. [2020-09-24 21:45:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:45:57,464 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 205 [2020-09-24 21:45:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:57,469 INFO L225 Difference]: With dead ends: 1391 [2020-09-24 21:45:57,470 INFO L226 Difference]: Without dead ends: 861 [2020-09-24 21:45:57,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:45:57,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-09-24 21:45:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 851. [2020-09-24 21:45:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-24 21:45:57,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1040 transitions. [2020-09-24 21:45:57,498 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1040 transitions. Word has length 205 [2020-09-24 21:45:57,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:57,499 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1040 transitions. [2020-09-24 21:45:57,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:45:57,499 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1040 transitions. [2020-09-24 21:45:57,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-24 21:45:57,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:57,504 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:57,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:57,504 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:57,505 INFO L82 PathProgramCache]: Analyzing trace with hash 383410675, now seen corresponding path program 1 times [2020-09-24 21:45:57,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:57,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464261978] [2020-09-24 21:45:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:57,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:57,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:01,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:02,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 21:46:02,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:02,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-24 21:46:02,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:46:02,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:02,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-09-24 21:46:02,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:02,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:02,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:02,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:02,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:02,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 21:46:02,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:02,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:02,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:02,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:02,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:02,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:03,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:03,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:03,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:03,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-24 21:46:03,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:03,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:03,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:03,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:03,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:03,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:03,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:03,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:03,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:46:03,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:03,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-24 21:46:03,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:03,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:03,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:46:03,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 180 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:46:03,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464261978] [2020-09-24 21:46:03,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:03,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:46:03,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271971292] [2020-09-24 21:46:03,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:46:03,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:03,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:46:03,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:46:03,660 INFO L87 Difference]: Start difference. First operand 851 states and 1040 transitions. Second operand 10 states. [2020-09-24 21:46:06,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:06,764 INFO L93 Difference]: Finished difference Result 1986 states and 2563 transitions. [2020-09-24 21:46:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:46:06,764 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 244 [2020-09-24 21:46:06,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:06,779 INFO L225 Difference]: With dead ends: 1986 [2020-09-24 21:46:06,780 INFO L226 Difference]: Without dead ends: 1300 [2020-09-24 21:46:06,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:46:06,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2020-09-24 21:46:06,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1210. [2020-09-24 21:46:06,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-09-24 21:46:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1516 transitions. [2020-09-24 21:46:06,853 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1516 transitions. Word has length 244 [2020-09-24 21:46:06,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:06,854 INFO L479 AbstractCegarLoop]: Abstraction has 1210 states and 1516 transitions. [2020-09-24 21:46:06,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:46:06,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1516 transitions. [2020-09-24 21:46:06,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-24 21:46:06,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:06,860 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-09-24 21:46:06,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:46:06,861 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:06,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:06,861 INFO L82 PathProgramCache]: Analyzing trace with hash -175345899, now seen corresponding path program 1 times [2020-09-24 21:46:06,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:06,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965793792] [2020-09-24 21:46:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:09,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:09,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:11,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:11,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-24 21:46:11,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:46:11,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 21:46:11,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:11,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:46:11,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:11,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:46:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:12,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:12,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:12,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:12,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:12,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 21:46:12,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:12,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:12,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:12,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:12,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:12,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:12,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-24 21:46:12,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:12,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:46:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:12,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:12,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:46:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:12,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:12,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:12,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:12,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:46:12,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:12,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-24 21:46:12,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:12,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:46:12,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 140 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:46:13,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965793792] [2020-09-24 21:46:13,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:13,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:46:13,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76335993] [2020-09-24 21:46:13,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:46:13,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:13,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:46:13,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:46:13,296 INFO L87 Difference]: Start difference. First operand 1210 states and 1516 transitions. Second operand 13 states. [2020-09-24 21:46:13,644 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-24 21:46:19,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:19,474 INFO L93 Difference]: Finished difference Result 3244 states and 4319 transitions. [2020-09-24 21:46:19,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:46:19,474 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 254 [2020-09-24 21:46:19,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:19,487 INFO L225 Difference]: With dead ends: 3244 [2020-09-24 21:46:19,488 INFO L226 Difference]: Without dead ends: 2159 [2020-09-24 21:46:19,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-09-24 21:46:19,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2159 states. [2020-09-24 21:46:19,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2159 to 1758. [2020-09-24 21:46:19,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1758 states. [2020-09-24 21:46:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2286 transitions. [2020-09-24 21:46:19,559 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2286 transitions. Word has length 254 [2020-09-24 21:46:19,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:19,559 INFO L479 AbstractCegarLoop]: Abstraction has 1758 states and 2286 transitions. [2020-09-24 21:46:19,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:46:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2286 transitions. [2020-09-24 21:46:19,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-24 21:46:19,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:19,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:46:19,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:19,566 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:19,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:19,566 INFO L82 PathProgramCache]: Analyzing trace with hash 41608479, now seen corresponding path program 1 times [2020-09-24 21:46:19,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:19,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199860843] [2020-09-24 21:46:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:19,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:19,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:19,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking...