/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:22:35,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:22:35,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:22:35,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:22:35,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:22:35,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:22:35,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:22:35,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:22:35,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:22:35,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:22:35,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:22:35,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:22:35,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:22:35,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:22:35,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:22:35,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:22:35,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:22:35,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:22:35,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:22:35,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:22:35,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:22:35,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:22:35,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:22:35,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:22:35,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:22:35,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:22:35,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:22:35,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:22:35,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:22:35,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:22:35,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:22:35,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:22:35,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:22:35,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:22:35,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:22:35,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:22:35,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:22:35,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:22:35,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:22:35,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:22:35,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:22:35,414 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:22:35,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:22:35,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:22:35,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:22:35,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:22:35,441 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:22:35,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:22:35,442 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:22:35,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:22:35,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:22:35,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:22:35,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:22:35,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:22:35,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:22:35,443 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:22:35,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:22:35,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:22:35,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:22:35,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:22:35,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:22:35,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:22:35,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:22:35,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:22:35,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:22:35,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:22:35,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:22:35,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:22:35,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:22:35,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:22:35,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:22:35,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:22:35,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:22:35,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:22:35,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:22:35,912 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:22:35,913 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:22:35,914 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label33.c [2020-09-24 18:22:36,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/016d36b78/53b8526536ba44f29f8d5795e5dd1dd9/FLAGd3a042f8f [2020-09-24 18:22:36,691 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:22:36,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label33.c [2020-09-24 18:22:36,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/016d36b78/53b8526536ba44f29f8d5795e5dd1dd9/FLAGd3a042f8f [2020-09-24 18:22:36,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/016d36b78/53b8526536ba44f29f8d5795e5dd1dd9 [2020-09-24 18:22:36,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:22:36,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:22:36,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:36,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:22:36,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:22:36,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:36" (1/1) ... [2020-09-24 18:22:36,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bc88a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:36, skipping insertion in model container [2020-09-24 18:22:36,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:36" (1/1) ... [2020-09-24 18:22:36,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:22:37,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:22:37,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:37,650 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:22:37,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:37,879 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:22:37,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:37 WrapperNode [2020-09-24 18:22:37,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:37,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:22:37,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:22:37,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:22:37,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:37" (1/1) ... [2020-09-24 18:22:37,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:37" (1/1) ... [2020-09-24 18:22:37,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:37" (1/1) ... [2020-09-24 18:22:37,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:37" (1/1) ... [2020-09-24 18:22:37,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:37" (1/1) ... [2020-09-24 18:22:37,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:37" (1/1) ... [2020-09-24 18:22:38,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:37" (1/1) ... [2020-09-24 18:22:38,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:22:38,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:22:38,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:22:38,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:22:38,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:22:38,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:22:38,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:22:38,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:22:38,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:22:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:22:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:22:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:22:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:22:38,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:22:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:22:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:22:39,447 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:22:39,447 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:22:39,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:39 BoogieIcfgContainer [2020-09-24 18:22:39,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:22:39,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:22:39,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:22:39,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:22:39,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:22:36" (1/3) ... [2020-09-24 18:22:39,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63360cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:39, skipping insertion in model container [2020-09-24 18:22:39,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:37" (2/3) ... [2020-09-24 18:22:39,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63360cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:39, skipping insertion in model container [2020-09-24 18:22:39,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:39" (3/3) ... [2020-09-24 18:22:39,467 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label33.c [2020-09-24 18:22:39,480 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:22:39,491 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:22:39,514 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:22:39,551 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:22:39,551 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:22:39,552 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:22:39,552 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:22:39,552 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:22:39,552 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:22:39,552 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:22:39,552 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:22:39,586 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:22:39,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 18:22:39,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:39,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:39,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:39,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:39,620 INFO L82 PathProgramCache]: Analyzing trace with hash 341026450, now seen corresponding path program 1 times [2020-09-24 18:22:39,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:39,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486798509] [2020-09-24 18:22:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:40,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:40,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:40,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:41,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:43,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:43,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:43,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:44,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:44,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:44,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:44,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:44,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 18:22:44,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:22:44,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-24 18:22:44,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:22:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:22:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-24 18:22:44,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 18:22:45,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:45,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:45,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:45,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:45,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:45,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:22:45,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:45,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:22:45,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:45,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486798509] [2020-09-24 18:22:45,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:22:45,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:22:45,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156039034] [2020-09-24 18:22:45,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:22:45,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:45,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:22:45,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:22:45,467 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:22:47,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:47,628 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-24 18:22:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:22:47,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-09-24 18:22:47,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:47,673 INFO L225 Difference]: With dead ends: 1206 [2020-09-24 18:22:47,673 INFO L226 Difference]: Without dead ends: 628 [2020-09-24 18:22:47,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:47,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-24 18:22:47,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-24 18:22:47,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-24 18:22:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-24 18:22:47,826 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 167 [2020-09-24 18:22:47,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:47,827 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-24 18:22:47,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:22:47,827 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-24 18:22:47,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-24 18:22:47,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:47,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:47,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:22:47,835 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:47,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:47,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1817628535, now seen corresponding path program 1 times [2020-09-24 18:22:47,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:47,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600039122] [2020-09-24 18:22:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:47,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:47,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:48,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:52,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:52,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-24 18:22:52,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:22:52,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-24 18:22:52,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:22:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:22:52,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:22:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:53,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:53,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:53,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:53,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:53,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:53,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:22:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:22:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:22:53,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:53,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:53,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:53,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:22:53,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:53,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 18:22:53,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:22:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:53,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600039122] [2020-09-24 18:22:53,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:22:53,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:22:53,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606204038] [2020-09-24 18:22:53,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:22:53,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:53,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:22:53,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:22:53,326 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 8 states. [2020-09-24 18:22:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:56,210 INFO L93 Difference]: Finished difference Result 1896 states and 2479 transitions. [2020-09-24 18:22:56,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 18:22:56,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2020-09-24 18:22:56,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:56,227 INFO L225 Difference]: With dead ends: 1896 [2020-09-24 18:22:56,227 INFO L226 Difference]: Without dead ends: 1303 [2020-09-24 18:22:56,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:22:56,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2020-09-24 18:22:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1239. [2020-09-24 18:22:56,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-09-24 18:22:56,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1541 transitions. [2020-09-24 18:22:56,283 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1541 transitions. Word has length 201 [2020-09-24 18:22:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:56,283 INFO L479 AbstractCegarLoop]: Abstraction has 1239 states and 1541 transitions. [2020-09-24 18:22:56,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:22:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1541 transitions. [2020-09-24 18:22:56,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-24 18:22:56,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:56,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:56,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:22:56,300 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:56,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:56,301 INFO L82 PathProgramCache]: Analyzing trace with hash 527414775, now seen corresponding path program 1 times [2020-09-24 18:22:56,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:56,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645210083] [2020-09-24 18:22:56,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:56,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:56,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:57,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:57,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:59,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:59,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:01,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:01,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:01,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-24 18:23:01,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:23:01,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:23:01,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:23:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 18:23:01,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:01,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:01,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:01,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:01,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:01,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:23:01,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:23:01,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:01,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:01,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:01,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:23:01,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:01,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 18:23:01,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:01,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:01,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:01,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:23:01,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:01,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645210083] [2020-09-24 18:23:01,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:01,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:23:01,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500021619] [2020-09-24 18:23:01,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:01,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:01,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:01,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:01,678 INFO L87 Difference]: Start difference. First operand 1239 states and 1541 transitions. Second operand 7 states. [2020-09-24 18:23:04,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:04,493 INFO L93 Difference]: Finished difference Result 3487 states and 4477 transitions. [2020-09-24 18:23:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:23:04,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-09-24 18:23:04,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:04,510 INFO L225 Difference]: With dead ends: 3487 [2020-09-24 18:23:04,511 INFO L226 Difference]: Without dead ends: 2270 [2020-09-24 18:23:04,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:04,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2020-09-24 18:23:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2154. [2020-09-24 18:23:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2154 states. [2020-09-24 18:23:04,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 2638 transitions. [2020-09-24 18:23:04,611 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 2638 transitions. Word has length 202 [2020-09-24 18:23:04,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:04,613 INFO L479 AbstractCegarLoop]: Abstraction has 2154 states and 2638 transitions. [2020-09-24 18:23:04,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:04,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 2638 transitions. [2020-09-24 18:23:04,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-24 18:23:04,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:04,633 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:04,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:04,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:04,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:04,635 INFO L82 PathProgramCache]: Analyzing trace with hash -2053148715, now seen corresponding path program 1 times [2020-09-24 18:23:04,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:04,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056409622] [2020-09-24 18:23:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:04,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:04,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:04,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:05,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:05,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:09,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:09,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:09,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-24 18:23:09,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:23:09,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:23:09,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:09,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:09,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 18:23:09,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-24 18:23:09,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:09,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:09,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:09,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:09,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:09,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:09,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:23:09,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:09,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:09,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:09,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:09,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:09,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:23:09,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:23:09,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:09,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:09,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:23:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:09,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:09,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:09,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:09,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:09,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:23:09,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:09,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:09,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:09,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:23:09,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 18:23:10,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056409622] [2020-09-24 18:23:10,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:10,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:10,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550410635] [2020-09-24 18:23:10,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:10,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:10,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:10,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:10,059 INFO L87 Difference]: Start difference. First operand 2154 states and 2638 transitions. Second operand 5 states. [2020-09-24 18:23:11,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:11,695 INFO L93 Difference]: Finished difference Result 4940 states and 6207 transitions. [2020-09-24 18:23:11,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:11,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-09-24 18:23:11,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:11,712 INFO L225 Difference]: With dead ends: 4940 [2020-09-24 18:23:11,712 INFO L226 Difference]: Without dead ends: 2399 [2020-09-24 18:23:11,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:11,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2020-09-24 18:23:11,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2366. [2020-09-24 18:23:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2366 states. [2020-09-24 18:23:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 2786 transitions. [2020-09-24 18:23:11,793 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 2786 transitions. Word has length 223 [2020-09-24 18:23:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:11,793 INFO L479 AbstractCegarLoop]: Abstraction has 2366 states and 2786 transitions. [2020-09-24 18:23:11,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:11,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 2786 transitions. [2020-09-24 18:23:11,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-24 18:23:11,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:11,804 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:11,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:23:11,804 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:11,805 INFO L82 PathProgramCache]: Analyzing trace with hash -723743187, now seen corresponding path program 1 times [2020-09-24 18:23:11,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:11,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604296202] [2020-09-24 18:23:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:11,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:12,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:12,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:16,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:16,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 18:23:16,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:16,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:23:16,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 18:23:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:23:16,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:16,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:16,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:16,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:16,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:16,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:16,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:16,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:16,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:16,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:17,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:17,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:17,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:23:17,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:17,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:23:17,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:17,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:17,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:23:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:17,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:17,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:17,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:17,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:17,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:17,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:17,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:23:17,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:17,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 18:23:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:17,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:17,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:23:17,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 18:23:17,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:17,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:17,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:17,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:23:17,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 18:23:17,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604296202] [2020-09-24 18:23:17,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:17,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:23:17,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110365162] [2020-09-24 18:23:17,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:23:17,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:17,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:23:17,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:23:17,222 INFO L87 Difference]: Start difference. First operand 2366 states and 2786 transitions. Second operand 8 states. [2020-09-24 18:23:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:18,389 INFO L93 Difference]: Finished difference Result 4467 states and 5258 transitions. [2020-09-24 18:23:18,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:23:18,396 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 242 [2020-09-24 18:23:18,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:18,413 INFO L225 Difference]: With dead ends: 4467 [2020-09-24 18:23:18,413 INFO L226 Difference]: Without dead ends: 2123 [2020-09-24 18:23:18,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:23:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2020-09-24 18:23:18,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2111. [2020-09-24 18:23:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2111 states. [2020-09-24 18:23:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 2378 transitions. [2020-09-24 18:23:18,490 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 2378 transitions. Word has length 242 [2020-09-24 18:23:18,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:18,491 INFO L479 AbstractCegarLoop]: Abstraction has 2111 states and 2378 transitions. [2020-09-24 18:23:18,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:23:18,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 2378 transitions. [2020-09-24 18:23:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-24 18:23:18,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:18,500 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:18,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:23:18,500 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:18,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:18,501 INFO L82 PathProgramCache]: Analyzing trace with hash 757659362, now seen corresponding path program 1 times [2020-09-24 18:23:18,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:18,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825554079] [2020-09-24 18:23:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:19,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking...