/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_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:22:39,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:22:39,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:22:39,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:22:39,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:22:39,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:22:39,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:22:39,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:22:39,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:22:39,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:22:39,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:22:39,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:22:39,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:22:39,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:22:39,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:22:39,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:22:39,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:22:39,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:22:39,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:22:39,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:22:39,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:22:39,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:22:39,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:22:39,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:22:39,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:22:39,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:22:39,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:22:39,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:22:39,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:22:39,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:22:39,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:22:39,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:22:39,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:22:39,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:22:39,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:22:39,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:22:39,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:22:39,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:22:39,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:22:39,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:22:39,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:22:39,097 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 18:22:39,131 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:22:39,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:22:39,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:22:39,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:22:39,133 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:22:39,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:22:39,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:22:39,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:22:39,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:22:39,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:22:39,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:22:39,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:22:39,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:22:39,135 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:22:39,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:22:39,135 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:22:39,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:22:39,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:22:39,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:22:39,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:22:39,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:22:39,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:22:39,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:22:39,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:22:39,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:22:39,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:22:39,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:22:39,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:22:39,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:22:39,138 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 18:22:39,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:22:39,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:22:39,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:22:39,650 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:22:39,651 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:22:39,653 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label35.c [2020-09-24 18:22:39,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70b8a2dbd/4a97e7c79ddc4f3b8d948cb730283050/FLAG5f33cf137 [2020-09-24 18:22:40,428 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:22:40,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label35.c [2020-09-24 18:22:40,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70b8a2dbd/4a97e7c79ddc4f3b8d948cb730283050/FLAG5f33cf137 [2020-09-24 18:22:40,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70b8a2dbd/4a97e7c79ddc4f3b8d948cb730283050 [2020-09-24 18:22:40,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:22:40,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:22:40,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:40,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:22:40,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:22:40,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:40" (1/1) ... [2020-09-24 18:22:40,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:40, skipping insertion in model container [2020-09-24 18:22:40,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:40" (1/1) ... [2020-09-24 18:22:40,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:22:40,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:22:41,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:41,335 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:22:41,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:41,461 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:22:41,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:41 WrapperNode [2020-09-24 18:22:41,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:41,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:22:41,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:22:41,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:22:41,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:41" (1/1) ... [2020-09-24 18:22:41,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:41" (1/1) ... [2020-09-24 18:22:41,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:41" (1/1) ... [2020-09-24 18:22:41,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:41" (1/1) ... [2020-09-24 18:22:41,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:41" (1/1) ... [2020-09-24 18:22:41,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:41" (1/1) ... [2020-09-24 18:22:41,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:41" (1/1) ... [2020-09-24 18:22:41,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:22:41,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:22:41,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:22:41,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:22:41,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:41" (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 18:22:41,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:22:41,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:22:41,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:22:41,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:22:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:22:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:22:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:22:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:22:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:22:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:22:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:22:43,187 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:22:43,188 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:22:43,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:43 BoogieIcfgContainer [2020-09-24 18:22:43,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:22:43,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:22:43,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:22:43,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:22:43,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:22:40" (1/3) ... [2020-09-24 18:22:43,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:43, skipping insertion in model container [2020-09-24 18:22:43,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:41" (2/3) ... [2020-09-24 18:22:43,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:43, skipping insertion in model container [2020-09-24 18:22:43,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:43" (3/3) ... [2020-09-24 18:22:43,221 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label35.c [2020-09-24 18:22:43,235 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:22:43,251 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:22:43,275 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:22:43,323 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:22:43,323 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:22:43,324 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:22:43,324 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:22:43,324 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:22:43,324 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:22:43,324 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:22:43,325 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:22:43,366 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:22:43,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-24 18:22:43,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:43,394 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] [2020-09-24 18:22:43,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:43,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:43,402 INFO L82 PathProgramCache]: Analyzing trace with hash -691491799, now seen corresponding path program 1 times [2020-09-24 18:22:43,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:43,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967537662] [2020-09-24 18:22:43,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:43,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:44,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:48,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:48,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:48,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 18:22:48,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:22:48,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-09-24 18:22:48,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:22:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 18:22:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 18:22:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:22:49,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:49,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:49,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:49,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:49,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:49,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:22:49,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:49,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:49,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:22:49,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:22:49,184 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 18:22:49,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967537662] [2020-09-24 18:22:49,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:22:49,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:22:49,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453050792] [2020-09-24 18:22:49,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:22:49,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:49,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:22:49,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:22:49,230 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:22:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:51,638 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-24 18:22:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:22:51,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-09-24 18:22:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:51,683 INFO L225 Difference]: With dead ends: 1396 [2020-09-24 18:22:51,683 INFO L226 Difference]: Without dead ends: 788 [2020-09-24 18:22:51,696 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 18:22:51,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-24 18:22:51,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-24 18:22:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-24 18:22:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-24 18:22:51,808 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 120 [2020-09-24 18:22:51,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:51,809 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-24 18:22:51,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:22:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-24 18:22:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-24 18:22:51,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:51,817 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:22:51,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:22:51,818 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:51,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1698265725, now seen corresponding path program 1 times [2020-09-24 18:22:51,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:51,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178469453] [2020-09-24 18:22:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:51,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:52,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:52,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:55,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:56,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:56,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:56,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:56,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-24 18:22:56,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:22:56,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:22:56,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:56,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:56,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:22:56,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 18:22:56,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:57,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:57,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:57,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:57,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:57,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:22:57,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:57,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:57,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:57,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:22:57,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:57,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:22:57,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:57,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:57,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:22:57,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:57,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178469453] [2020-09-24 18:22:57,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:57,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:57,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147122350] [2020-09-24 18:22:57,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:57,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:57,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:57,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:57,095 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-24 18:22:58,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:58,929 INFO L93 Difference]: Finished difference Result 1662 states and 2128 transitions. [2020-09-24 18:22:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:58,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-24 18:22:58,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:58,940 INFO L225 Difference]: With dead ends: 1662 [2020-09-24 18:22:58,941 INFO L226 Difference]: Without dead ends: 1019 [2020-09-24 18:22:58,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:58,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-24 18:22:59,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 971. [2020-09-24 18:22:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-09-24 18:22:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1181 transitions. [2020-09-24 18:22:59,025 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1181 transitions. Word has length 138 [2020-09-24 18:22:59,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:59,026 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1181 transitions. [2020-09-24 18:22:59,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1181 transitions. [2020-09-24 18:22:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-24 18:22:59,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:59,031 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:22:59,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:22:59,031 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:59,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:59,032 INFO L82 PathProgramCache]: Analyzing trace with hash -232571042, now seen corresponding path program 1 times [2020-09-24 18:22:59,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:59,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841310850] [2020-09-24 18:22:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:59,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:59,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:01,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:02,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:02,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:04,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:04,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 18:23:04,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:23:04,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:23:04,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:04,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:04,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:23:04,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 18:23:04,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:04,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:04,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:04,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:04,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:04,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:04,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:04,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:04,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:04,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:04,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:04,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:04,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:04,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:04,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:23:04,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:04,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:23:04,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:23:04,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:04,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841310850] [2020-09-24 18:23:04,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:04,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:04,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018825042] [2020-09-24 18:23:04,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:04,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:04,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:04,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:04,261 INFO L87 Difference]: Start difference. First operand 971 states and 1181 transitions. Second operand 5 states. [2020-09-24 18:23:06,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:06,281 INFO L93 Difference]: Finished difference Result 2094 states and 2618 transitions. [2020-09-24 18:23:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:06,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-24 18:23:06,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:06,297 INFO L225 Difference]: With dead ends: 2094 [2020-09-24 18:23:06,297 INFO L226 Difference]: Without dead ends: 1145 [2020-09-24 18:23:06,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:06,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-09-24 18:23:06,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1123. [2020-09-24 18:23:06,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-09-24 18:23:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1356 transitions. [2020-09-24 18:23:06,353 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1356 transitions. Word has length 139 [2020-09-24 18:23:06,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:06,355 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1356 transitions. [2020-09-24 18:23:06,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1356 transitions. [2020-09-24 18:23:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 18:23:06,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:06,362 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:23:06,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:06,363 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:06,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1366531083, now seen corresponding path program 1 times [2020-09-24 18:23:06,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:06,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065337077] [2020-09-24 18:23:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:06,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:06,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:06,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:07,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:07,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:10,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:11,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 18:23:11,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:23:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 18:23:11,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:11,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:11,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:23:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 18:23:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:11,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:11,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:11,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:11,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:11,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:23:11,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:11,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:11,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:11,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:11,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:23:11,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:11,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:23:11,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:23:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:11,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065337077] [2020-09-24 18:23:11,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:11,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:11,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97545431] [2020-09-24 18:23:11,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:11,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:11,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:11,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:11,661 INFO L87 Difference]: Start difference. First operand 1123 states and 1356 transitions. Second operand 5 states. [2020-09-24 18:23:13,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:13,671 INFO L93 Difference]: Finished difference Result 2578 states and 3239 transitions. [2020-09-24 18:23:13,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:13,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-24 18:23:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:13,682 INFO L225 Difference]: With dead ends: 2578 [2020-09-24 18:23:13,682 INFO L226 Difference]: Without dead ends: 1477 [2020-09-24 18:23:13,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 18:23:13,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2020-09-24 18:23:13,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1428. [2020-09-24 18:23:13,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1428 states. [2020-09-24 18:23:13,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1700 transitions. [2020-09-24 18:23:13,739 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1700 transitions. Word has length 142 [2020-09-24 18:23:13,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:13,740 INFO L479 AbstractCegarLoop]: Abstraction has 1428 states and 1700 transitions. [2020-09-24 18:23:13,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:13,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1700 transitions. [2020-09-24 18:23:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 18:23:13,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:13,746 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:23:13,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:23:13,747 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:13,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:13,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1744043754, now seen corresponding path program 1 times [2020-09-24 18:23:13,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:13,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989646121] [2020-09-24 18:23:13,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:13,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:13,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:13,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:18,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-24 18:23:18,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:23:18,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 18:23:18,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:18,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:18,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:23:18,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:23:18,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:18,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:18,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:18,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:18,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:18,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:23:18,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:18,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:18,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:18,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:18,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:18,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 18:23:18,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 18:23:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:23:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:18,973 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:18,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989646121] [2020-09-24 18:23:18,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:18,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:23:18,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546295961] [2020-09-24 18:23:18,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:18,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:18,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:18,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:18,975 INFO L87 Difference]: Start difference. First operand 1428 states and 1700 transitions. Second operand 5 states. [2020-09-24 18:23:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:20,812 INFO L93 Difference]: Finished difference Result 3173 states and 3921 transitions. [2020-09-24 18:23:20,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:20,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-24 18:23:20,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:20,826 INFO L225 Difference]: With dead ends: 3173 [2020-09-24 18:23:20,826 INFO L226 Difference]: Without dead ends: 1767 [2020-09-24 18:23:20,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:20,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-24 18:23:20,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1730. [2020-09-24 18:23:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1730 states. [2020-09-24 18:23:20,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2086 transitions. [2020-09-24 18:23:20,879 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2086 transitions. Word has length 149 [2020-09-24 18:23:20,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:20,879 INFO L479 AbstractCegarLoop]: Abstraction has 1730 states and 2086 transitions. [2020-09-24 18:23:20,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:20,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2086 transitions. [2020-09-24 18:23:20,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-24 18:23:20,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:20,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:20,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:23:20,887 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:20,887 INFO L82 PathProgramCache]: Analyzing trace with hash 446425949, now seen corresponding path program 1 times [2020-09-24 18:23:20,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:20,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986902014] [2020-09-24 18:23:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:20,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:23,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:23,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:24,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:25,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:25,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-24 18:23:25,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:23:25,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:23:25,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 18:23:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 18:23:25,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:26,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:26,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:26,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:26,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:26,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:23:26,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:26,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:26,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:26,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:26,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:26,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:23:26,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:23:26,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:23:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:26,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986902014] [2020-09-24 18:23:26,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:26,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:26,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855645042] [2020-09-24 18:23:26,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:26,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:26,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:26,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:26,116 INFO L87 Difference]: Start difference. First operand 1730 states and 2086 transitions. Second operand 5 states.