/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=1000 --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/Problem10_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:28:38,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:28:38,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:28:38,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:28:38,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:28:38,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:28:38,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:28:38,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:28:38,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:28:38,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:28:38,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:28:38,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:28:38,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:28:38,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:28:38,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:28:38,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:28:38,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:28:38,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:28:38,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:28:38,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:28:38,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:28:38,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:28:38,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:28:38,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:28:38,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:28:38,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:28:38,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:28:38,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:28:38,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:28:38,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:28:38,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:28:38,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:28:38,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:28:38,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:28:38,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:28:38,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:28:38,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:28:38,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:28:38,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:28:38,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:28:38,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:28:38,309 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 19:28:38,361 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:28:38,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:28:38,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:28:38,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:28:38,364 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:28:38,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:28:38,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:28:38,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:28:38,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:28:38,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:28:38,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:28:38,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:28:38,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:28:38,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:28:38,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:28:38,369 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:28:38,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:28:38,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:28:38,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:28:38,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:28:38,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:28:38,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:28:38,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:28:38,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:28:38,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:28:38,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:28:38,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:28:38,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:28:38,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:28:38,371 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=1000;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=1000;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=1000;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=1000;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:28:38,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:28:38,878 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:28:38,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:28:38,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:28:38,886 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:28:38,887 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-24 19:28:38,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f45af52db/91fb5840eb864586bb37d1c3068bdefc/FLAG50b763a58 [2020-09-24 19:28:39,629 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:28:39,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-24 19:28:39,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f45af52db/91fb5840eb864586bb37d1c3068bdefc/FLAG50b763a58 [2020-09-24 19:28:39,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f45af52db/91fb5840eb864586bb37d1c3068bdefc [2020-09-24 19:28:39,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:28:39,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:28:39,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:28:39,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:28:39,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:28:39,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:28:39" (1/1) ... [2020-09-24 19:28:39,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40dc6253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:39, skipping insertion in model container [2020-09-24 19:28:39,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:28:39" (1/1) ... [2020-09-24 19:28:39,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:28:39,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:28:40,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:28:40,526 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:28:40,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:28:40,653 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:28:40,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:40 WrapperNode [2020-09-24 19:28:40,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:28:40,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:28:40,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:28:40,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:28:40,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:40" (1/1) ... [2020-09-24 19:28:40,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:40" (1/1) ... [2020-09-24 19:28:40,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:40" (1/1) ... [2020-09-24 19:28:40,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:40" (1/1) ... [2020-09-24 19:28:40,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:40" (1/1) ... [2020-09-24 19:28:40,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:40" (1/1) ... [2020-09-24 19:28:40,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:40" (1/1) ... [2020-09-24 19:28:40,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:28:40,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:28:40,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:28:40,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:28:40,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:28:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:28:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:28:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:28:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:28:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:28:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:28:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:28:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:28:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:28:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:28:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:28:42,306 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:28:42,306 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:28:42,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:28:42 BoogieIcfgContainer [2020-09-24 19:28:42,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:28:42,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:28:42,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:28:42,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:28:42,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:28:39" (1/3) ... [2020-09-24 19:28:42,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2fc166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:28:42, skipping insertion in model container [2020-09-24 19:28:42,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:40" (2/3) ... [2020-09-24 19:28:42,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2fc166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:28:42, skipping insertion in model container [2020-09-24 19:28:42,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:28:42" (3/3) ... [2020-09-24 19:28:42,326 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label05.c [2020-09-24 19:28:42,338 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:28:42,349 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:28:42,369 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:28:42,406 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:28:42,406 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:28:42,406 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:28:42,406 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:28:42,406 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:28:42,407 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:28:42,407 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:28:42,407 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:28:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 19:28:42,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 19:28:42,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:42,454 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] [2020-09-24 19:28:42,455 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:42,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:42,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1858369017, now seen corresponding path program 1 times [2020-09-24 19:28:42,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:42,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218710973] [2020-09-24 19:28:42,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:43,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:43,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:43,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:43,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:28:43,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:28:43,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-09-24 19:28:43,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:28:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:28:43,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 19:28:43,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:28:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:43,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:43,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:43,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:28:43,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:43,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:28:43,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:28:43,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:43,722 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 19:28:43,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218710973] [2020-09-24 19:28:43,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:28:43,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:28:43,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700022699] [2020-09-24 19:28:43,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:28:43,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:43,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:28:43,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:28:43,759 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 19:28:46,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:28:46,848 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-24 19:28:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:28:46,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-09-24 19:28:46,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:28:46,880 INFO L225 Difference]: With dead ends: 1352 [2020-09-24 19:28:46,880 INFO L226 Difference]: Without dead ends: 806 [2020-09-24 19:28:46,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:28:46,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-24 19:28:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-24 19:28:46,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-24 19:28:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-24 19:28:46,997 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 71 [2020-09-24 19:28:46,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:28:46,998 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-24 19:28:46,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:28:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-24 19:28:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 19:28:47,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:47,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:47,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:28:47,012 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:47,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:47,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2032396842, now seen corresponding path program 1 times [2020-09-24 19:28:47,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:47,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624729287] [2020-09-24 19:28:47,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:47,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:47,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:47,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:48,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:48,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 19:28:48,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:28:48,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:28:48,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 19:28:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 19:28:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:48,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:48,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:48,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:28:48,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:48,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:28:48,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:28:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:28:48,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:48,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:28:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:48,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:48,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:48,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:28:48,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:48,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 19:28:48,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 19:28:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:28:48,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624729287] [2020-09-24 19:28:48,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:28:48,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:28:48,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126307896] [2020-09-24 19:28:48,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:28:48,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:48,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:28:48,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:28:48,420 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 5 states. [2020-09-24 19:28:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:28:50,342 INFO L93 Difference]: Finished difference Result 1762 states and 2252 transitions. [2020-09-24 19:28:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:28:50,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-24 19:28:50,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:28:50,353 INFO L225 Difference]: With dead ends: 1762 [2020-09-24 19:28:50,353 INFO L226 Difference]: Without dead ends: 1050 [2020-09-24 19:28:50,356 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 19:28:50,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-09-24 19:28:50,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1030. [2020-09-24 19:28:50,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2020-09-24 19:28:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1226 transitions. [2020-09-24 19:28:50,412 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1226 transitions. Word has length 154 [2020-09-24 19:28:50,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:28:50,413 INFO L479 AbstractCegarLoop]: Abstraction has 1030 states and 1226 transitions. [2020-09-24 19:28:50,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:28:50,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1226 transitions. [2020-09-24 19:28:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 19:28:50,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:50,418 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:50,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:28:50,419 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:50,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:50,419 INFO L82 PathProgramCache]: Analyzing trace with hash 659489306, now seen corresponding path program 1 times [2020-09-24 19:28:50,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:50,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712232525] [2020-09-24 19:28:50,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:50,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:50,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:50,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:51,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:51,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-24 19:28:51,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:28:51,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:28:51,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 19:28:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 19:28:51,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:51,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:51,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:51,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:51,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:28:51,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:51,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:28:51,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:28:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:28:51,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:51,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:28:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:51,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:51,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:51,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:28:51,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 19:28:51,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:51,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:28:51,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:28:51,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712232525] [2020-09-24 19:28:51,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:28:51,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:28:51,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614737508] [2020-09-24 19:28:51,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:28:51,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:51,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:28:51,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:28:51,753 INFO L87 Difference]: Start difference. First operand 1030 states and 1226 transitions. Second operand 5 states. [2020-09-24 19:28:53,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:28:53,499 INFO L93 Difference]: Finished difference Result 1640 states and 2035 transitions. [2020-09-24 19:28:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:28:53,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-24 19:28:53,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:28:53,514 INFO L225 Difference]: With dead ends: 1640 [2020-09-24 19:28:53,514 INFO L226 Difference]: Without dead ends: 1638 [2020-09-24 19:28:53,515 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 19:28:53,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2020-09-24 19:28:53,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1188. [2020-09-24 19:28:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2020-09-24 19:28:53,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1471 transitions. [2020-09-24 19:28:53,574 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1471 transitions. Word has length 160 [2020-09-24 19:28:53,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:28:53,577 INFO L479 AbstractCegarLoop]: Abstraction has 1188 states and 1471 transitions. [2020-09-24 19:28:53,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:28:53,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1471 transitions. [2020-09-24 19:28:53,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-24 19:28:53,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:53,584 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:53,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:28:53,585 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:53,585 INFO L82 PathProgramCache]: Analyzing trace with hash -517211058, now seen corresponding path program 1 times [2020-09-24 19:28:53,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:53,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517460778] [2020-09-24 19:28:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:53,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:53,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:54,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:54,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:54,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-24 19:28:54,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:28:54,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:28:54,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:28:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:28:54,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 19:28:54,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 19:28:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:54,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:54,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:54,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:28:54,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:54,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:28:54,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:54,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:28:54,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:54,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:28:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:54,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:55,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:55,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 19:28:55,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:55,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-24 19:28:55,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:55,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:55,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:28:55,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 19:28:55,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:28:55,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517460778] [2020-09-24 19:28:55,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:28:55,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:28:55,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433214212] [2020-09-24 19:28:55,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:28:55,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:55,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:28:55,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:28:55,184 INFO L87 Difference]: Start difference. First operand 1188 states and 1471 transitions. Second operand 8 states. [2020-09-24 19:28:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:28:57,327 INFO L93 Difference]: Finished difference Result 2869 states and 3720 transitions. [2020-09-24 19:28:57,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:28:57,329 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 203 [2020-09-24 19:28:57,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:28:57,344 INFO L225 Difference]: With dead ends: 2869 [2020-09-24 19:28:57,345 INFO L226 Difference]: Without dead ends: 1846 [2020-09-24 19:28:57,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:28:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2020-09-24 19:28:57,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1808. [2020-09-24 19:28:57,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2020-09-24 19:28:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2209 transitions. [2020-09-24 19:28:57,434 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2209 transitions. Word has length 203 [2020-09-24 19:28:57,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:28:57,434 INFO L479 AbstractCegarLoop]: Abstraction has 1808 states and 2209 transitions. [2020-09-24 19:28:57,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:28:57,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2209 transitions. [2020-09-24 19:28:57,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-24 19:28:57,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:57,441 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:28:57,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:28:57,441 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:57,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1674500493, now seen corresponding path program 1 times [2020-09-24 19:28:57,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:57,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285693970] [2020-09-24 19:28:57,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:57,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:57,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:58,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:58,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:58,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-24 19:28:58,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:28:58,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:28:58,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-24 19:28:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 19:28:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:58,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:58,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:58,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:28:58,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:28:58,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:28:58,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:58,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:28:58,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:58,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:28:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:58,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:58,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:58,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:28:58,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:58,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 19:28:58,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 19:28:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:58,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 19:28:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:58,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:58,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:58,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:28:58,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 19:28:58,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:28:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:28:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:28:58,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:28:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:28:59,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285693970] [2020-09-24 19:28:59,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:28:59,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:28:59,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261702265] [2020-09-24 19:28:59,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:28:59,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:59,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:28:59,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:28:59,112 INFO L87 Difference]: Start difference. First operand 1808 states and 2209 transitions. Second operand 8 states. [2020-09-24 19:29:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:02,362 INFO L93 Difference]: Finished difference Result 4407 states and 5640 transitions. [2020-09-24 19:29:02,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:29:02,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2020-09-24 19:29:02,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:02,380 INFO L225 Difference]: With dead ends: 4407 [2020-09-24 19:29:02,380 INFO L226 Difference]: Without dead ends: 2764 [2020-09-24 19:29:02,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:29:02,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2020-09-24 19:29:02,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2740. [2020-09-24 19:29:02,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2740 states. [2020-09-24 19:29:02,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 3372 transitions. [2020-09-24 19:29:02,479 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 3372 transitions. Word has length 252 [2020-09-24 19:29:02,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:02,479 INFO L479 AbstractCegarLoop]: Abstraction has 2740 states and 3372 transitions. [2020-09-24 19:29:02,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:29:02,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 3372 transitions. [2020-09-24 19:29:02,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-24 19:29:02,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:02,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:29:02,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:29:02,486 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:02,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:02,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1488757271, now seen corresponding path program 1 times [2020-09-24 19:29:02,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:02,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912102223] [2020-09-24 19:29:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:02,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:02,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:03,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:03,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:03,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:03,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-09-24 19:29:03,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:03,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-24 19:29:03,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:29:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 19:29:03,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:03,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:03,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:03,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:03,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:03,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:03,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:03,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:03,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:03,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:03,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:03,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:29:03,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:03,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 19:29:03,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:03,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:03,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:29:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:03,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:04,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:04,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 19:29:04,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:04,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-24 19:29:04,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 19:29:04,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:04,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912102223] [2020-09-24 19:29:04,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:04,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:29:04,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302443035] [2020-09-24 19:29:04,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:29:04,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:04,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:29:04,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:29:04,242 INFO L87 Difference]: Start difference. First operand 2740 states and 3372 transitions. Second operand 8 states. [2020-09-24 19:29:07,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:07,073 INFO L93 Difference]: Finished difference Result 5815 states and 7281 transitions. [2020-09-24 19:29:07,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 19:29:07,073 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 258 [2020-09-24 19:29:07,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:07,090 INFO L225 Difference]: With dead ends: 5815 [2020-09-24 19:29:07,091 INFO L226 Difference]: Without dead ends: 3240 [2020-09-24 19:29:07,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:29:07,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2020-09-24 19:29:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 3204. [2020-09-24 19:29:07,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3204 states. [2020-09-24 19:29:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 3961 transitions. [2020-09-24 19:29:07,185 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 3961 transitions. Word has length 258 [2020-09-24 19:29:07,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:07,186 INFO L479 AbstractCegarLoop]: Abstraction has 3204 states and 3961 transitions. [2020-09-24 19:29:07,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:29:07,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 3961 transitions. [2020-09-24 19:29:07,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-09-24 19:29:07,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:07,198 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:07,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:29:07,199 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:07,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:07,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1771963301, now seen corresponding path program 1 times [2020-09-24 19:29:07,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:07,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668387918] [2020-09-24 19:29:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:07,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:07,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:08,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:08,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:08,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-09-24 19:29:08,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:08,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-09-24 19:29:08,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:29:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:29:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:08,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:08,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:08,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:08,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:08,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:08,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:08,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:08,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:08,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:08,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:29:08,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:08,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 19:29:08,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:08,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:08,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:08,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:29:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:08,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:08,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:08,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:29:08,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:08,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-24 19:29:08,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:08,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:08,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:08,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 19:29:08,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:08,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-24 19:29:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:08,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:08,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:08,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 19:29:08,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 19:29:08,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-24 19:29:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:08,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 248 proven. 76 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-24 19:29:08,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668387918] [2020-09-24 19:29:08,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:08,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:08,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491054914] [2020-09-24 19:29:08,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:08,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:08,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:08,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:08,988 INFO L87 Difference]: Start difference. First operand 3204 states and 3961 transitions. Second operand 7 states. [2020-09-24 19:29:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:11,818 INFO L93 Difference]: Finished difference Result 6411 states and 7951 transitions. [2020-09-24 19:29:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:11,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 344 [2020-09-24 19:29:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:11,835 INFO L225 Difference]: With dead ends: 6411 [2020-09-24 19:29:11,835 INFO L226 Difference]: Without dead ends: 3372 [2020-09-24 19:29:11,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:11,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2020-09-24 19:29:11,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 2598. [2020-09-24 19:29:11,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2598 states. [2020-09-24 19:29:11,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 2995 transitions. [2020-09-24 19:29:11,918 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 2995 transitions. Word has length 344 [2020-09-24 19:29:11,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:11,919 INFO L479 AbstractCegarLoop]: Abstraction has 2598 states and 2995 transitions. [2020-09-24 19:29:11,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 2995 transitions. [2020-09-24 19:29:11,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-09-24 19:29:11,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:11,930 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:29:11,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:29:11,931 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:11,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:11,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1974815547, now seen corresponding path program 1 times [2020-09-24 19:29:11,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:11,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001124262] [2020-09-24 19:29:11,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:12,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:13,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:13,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-09-24 19:29:13,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:13,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-24 19:29:13,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-09-24 19:29:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 19:29:13,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:13,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:13,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:13,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:13,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:13,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:13,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:13,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:13,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:13,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:13,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:13,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:13,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:13,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:13,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 19:29:13,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:13,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:13,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 19:29:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:13,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:13,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:13,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:29:13,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:13,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 19:29:13,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:13,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:29:13,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-09-24 19:29:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:13,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:13,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:13,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:13,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:13,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 19:29:13,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:29:13,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-09-24 19:29:13,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001124262] [2020-09-24 19:29:13,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:13,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:13,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119767055] [2020-09-24 19:29:13,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:13,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:13,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:13,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:13,695 INFO L87 Difference]: Start difference. First operand 2598 states and 2995 transitions. Second operand 7 states. [2020-09-24 19:29:15,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:15,575 INFO L93 Difference]: Finished difference Result 5413 states and 6266 transitions. [2020-09-24 19:29:15,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:15,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-09-24 19:29:15,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:15,589 INFO L225 Difference]: With dead ends: 5413 [2020-09-24 19:29:15,589 INFO L226 Difference]: Without dead ends: 2980 [2020-09-24 19:29:15,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-09-24 19:29:15,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2757. [2020-09-24 19:29:15,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2757 states. [2020-09-24 19:29:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3187 transitions. [2020-09-24 19:29:15,668 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3187 transitions. Word has length 357 [2020-09-24 19:29:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:15,669 INFO L479 AbstractCegarLoop]: Abstraction has 2757 states and 3187 transitions. [2020-09-24 19:29:15,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:15,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3187 transitions. [2020-09-24 19:29:15,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-09-24 19:29:15,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:15,687 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:29:15,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:29:15,687 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:15,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:15,688 INFO L82 PathProgramCache]: Analyzing trace with hash -144207753, now seen corresponding path program 1 times [2020-09-24 19:29:15,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:15,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545179974] [2020-09-24 19:29:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:15,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:15,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:16,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:16,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:16,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:16,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-09-24 19:29:16,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:16,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:29:16,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:16,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 19:29:16,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 19:29:16,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:16,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:16,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:16,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:16,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:16,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:16,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:16,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:16,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:16,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:16,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:16,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:16,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:16,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 19:29:16,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:29:16,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:16,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 19:29:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:16,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:17,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:17,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:17,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:17,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 19:29:17,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:29:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:17,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-24 19:29:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:17,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:17,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:17,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 19:29:17,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:17,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 19:29:17,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-09-24 19:29:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:17,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 250 proven. 71 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-24 19:29:17,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545179974] [2020-09-24 19:29:17,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:17,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:17,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595630238] [2020-09-24 19:29:17,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:17,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:17,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:17,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:17,463 INFO L87 Difference]: Start difference. First operand 2757 states and 3187 transitions. Second operand 7 states. [2020-09-24 19:29:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:19,851 INFO L93 Difference]: Finished difference Result 6067 states and 7143 transitions. [2020-09-24 19:29:19,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:19,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-09-24 19:29:19,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:19,864 INFO L225 Difference]: With dead ends: 6067 [2020-09-24 19:29:19,864 INFO L226 Difference]: Without dead ends: 2817 [2020-09-24 19:29:19,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:19,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2020-09-24 19:29:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2711. [2020-09-24 19:29:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2020-09-24 19:29:19,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3086 transitions. [2020-09-24 19:29:19,941 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3086 transitions. Word has length 372 [2020-09-24 19:29:19,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:19,942 INFO L479 AbstractCegarLoop]: Abstraction has 2711 states and 3086 transitions. [2020-09-24 19:29:19,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:19,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3086 transitions. [2020-09-24 19:29:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-09-24 19:29:19,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:19,954 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:19,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:29:19,955 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:19,955 INFO L82 PathProgramCache]: Analyzing trace with hash 319980294, now seen corresponding path program 1 times [2020-09-24 19:29:19,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:19,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356563226] [2020-09-24 19:29:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:20,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:20,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:20,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:20,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:21,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:21,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-09-24 19:29:21,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:21,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:29:21,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-24 19:29:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-24 19:29:21,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:21,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:21,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:21,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:21,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:21,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:29:21,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:21,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:21,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:21,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:21,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:29:21,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:21,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:29:21,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:21,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:21,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:29:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:21,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:21,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:21,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:21,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:21,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 19:29:21,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:21,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:21,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-24 19:29:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:21,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:21,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:21,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 19:29:21,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:21,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 19:29:21,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 19:29:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-24 19:29:21,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356563226] [2020-09-24 19:29:21,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:21,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:21,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595255185] [2020-09-24 19:29:21,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:21,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:21,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:21,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:21,805 INFO L87 Difference]: Start difference. First operand 2711 states and 3086 transitions. Second operand 7 states. [2020-09-24 19:29:24,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:24,613 INFO L93 Difference]: Finished difference Result 5771 states and 6585 transitions. [2020-09-24 19:29:24,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:24,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 407 [2020-09-24 19:29:24,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:24,626 INFO L225 Difference]: With dead ends: 5771 [2020-09-24 19:29:24,626 INFO L226 Difference]: Without dead ends: 3225 [2020-09-24 19:29:24,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:24,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3225 states. [2020-09-24 19:29:24,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3225 to 3197. [2020-09-24 19:29:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-09-24 19:29:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 3585 transitions. [2020-09-24 19:29:24,710 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 3585 transitions. Word has length 407 [2020-09-24 19:29:24,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:24,711 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 3585 transitions. [2020-09-24 19:29:24,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 3585 transitions. [2020-09-24 19:29:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-09-24 19:29:24,729 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:24,730 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:24,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:29:24,731 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:24,731 INFO L82 PathProgramCache]: Analyzing trace with hash 933747526, now seen corresponding path program 1 times [2020-09-24 19:29:24,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:24,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651768203] [2020-09-24 19:29:24,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:24,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:25,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-09-24 19:29:25,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:25,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:29:25,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:25,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:25,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 367 [2020-09-24 19:29:25,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 19:29:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:25,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:25,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:25,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:25,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:25,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:25,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:25,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:25,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:25,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:25,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:25,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:25,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:29:25,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:25,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 19:29:25,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:25,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:26,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:29:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 19:29:26,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:26,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:29:26,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:26,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:26,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:26,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:26,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-09-24 19:29:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:26,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 19:29:26,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:26,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:26,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 19:29:26,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 172 proven. 3 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-09-24 19:29:26,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651768203] [2020-09-24 19:29:26,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:26,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:26,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016354880] [2020-09-24 19:29:26,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:26,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:26,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:26,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:26,348 INFO L87 Difference]: Start difference. First operand 3197 states and 3585 transitions. Second operand 5 states. [2020-09-24 19:29:27,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:27,838 INFO L93 Difference]: Finished difference Result 6387 states and 7168 transitions. [2020-09-24 19:29:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:27,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 417 [2020-09-24 19:29:27,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:27,840 INFO L225 Difference]: With dead ends: 6387 [2020-09-24 19:29:27,840 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:29:27,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 19:29:27,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:29:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:29:27,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:29:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:29:27,852 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 417 [2020-09-24 19:29:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:27,852 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:29:27,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:27,852 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:29:27,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:29:27,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:29:27,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:29:28,859 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 96 [2020-09-24 19:29:29,056 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 96 [2020-09-24 19:29:29,640 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 38 [2020-09-24 19:29:30,099 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 47