/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:20:02,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:20:02,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:20:02,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:20:02,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:20:02,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:20:02,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:20:02,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:20:02,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:20:02,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:20:02,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:20:02,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:20:02,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:20:02,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:20:02,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:20:02,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:20:02,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:20:02,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:20:02,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:20:02,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:20:02,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:20:02,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:20:02,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:20:02,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:20:02,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:20:02,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:20:02,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:20:02,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:20:02,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:20:02,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:20:02,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:20:02,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:20:02,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:20:02,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:20:02,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:20:02,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:20:02,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:20:02,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:20:02,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:20:02,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:20:02,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:20:02,306 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 [2020-09-25 11:20:02,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:20:02,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:20:02,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:20:02,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:20:02,359 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:20:02,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:20:02,360 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:20:02,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:20:02,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:20:02,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:20:02,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:20:02,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:20:02,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:20:02,362 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:20:02,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:20:02,363 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:20:02,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:20:02,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:20:02,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:20:02,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:20:02,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:20:02,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:20:02,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:20:02,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:20:02,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:20:02,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:20:02,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:20:02,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:20:02,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:20:02,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:20:02,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:20:02,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:20:02,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:20:02,854 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:20:02,855 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:20:02,856 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 11:20:02,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dec99ffdc/7bf2808bb8444974b4843c44bcc4bfb8/FLAGded2f9a7a [2020-09-25 11:20:03,605 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:20:03,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 11:20:03,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dec99ffdc/7bf2808bb8444974b4843c44bcc4bfb8/FLAGded2f9a7a [2020-09-25 11:20:03,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dec99ffdc/7bf2808bb8444974b4843c44bcc4bfb8 [2020-09-25 11:20:03,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:20:03,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:20:03,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:03,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:20:03,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:20:03,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:03" (1/1) ... [2020-09-25 11:20:03,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4694b766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:03, skipping insertion in model container [2020-09-25 11:20:03,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:03" (1/1) ... [2020-09-25 11:20:03,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:20:03,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:20:04,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:04,575 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:20:04,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:04,728 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:20:04,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04 WrapperNode [2020-09-25 11:20:04,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:04,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:20:04,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:20:04,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:20:04,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:20:04,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:20:04,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:20:04,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:20:04,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (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 [2020-09-25 11:20:04,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:20:04,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:20:04,993 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:20:04,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:20:04,993 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:20:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:20:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:20:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:20:04,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:20:04,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:20:04,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:20:06,532 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:20:06,532 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:20:06,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:06 BoogieIcfgContainer [2020-09-25 11:20:06,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:20:06,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:20:06,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:20:06,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:20:06,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:20:03" (1/3) ... [2020-09-25 11:20:06,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfbde88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:06, skipping insertion in model container [2020-09-25 11:20:06,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (2/3) ... [2020-09-25 11:20:06,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfbde88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:06, skipping insertion in model container [2020-09-25 11:20:06,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:06" (3/3) ... [2020-09-25 11:20:06,553 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label54.c [2020-09-25 11:20:06,566 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:20:06,578 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:20:06,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:20:06,640 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:20:06,640 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:20:06,641 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:20:06,641 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:20:06,641 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:20:06,641 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:20:06,641 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:20:06,642 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:20:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:20:06,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 11:20:06,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:06,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:06,687 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:06,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:06,694 INFO L82 PathProgramCache]: Analyzing trace with hash -2126243537, now seen corresponding path program 1 times [2020-09-25 11:20:06,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:06,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217670929] [2020-09-25 11:20:06,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:06,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:08,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 11:20:08,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:20:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1274 [2020-09-25 11:20:08,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:08,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:20:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:20:08,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:08,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:08,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:08,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:08,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:20:08,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:08,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:08,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:08,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:08,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217670929] [2020-09-25 11:20:08,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:08,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:20:08,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041894875] [2020-09-25 11:20:08,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:20:08,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:08,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:20:08,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:20:08,404 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:20:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:10,578 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 11:20:10,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:20:10,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-09-25 11:20:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:10,624 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 11:20:10,624 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 11:20:10,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 11:20:10,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 11:20:10,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 11:20:10,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 11:20:10,787 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 81 [2020-09-25 11:20:10,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:10,788 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 11:20:10,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:20:10,789 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 11:20:10,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 11:20:10,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:10,799 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:20:10,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:20:10,799 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:10,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1687287808, now seen corresponding path program 1 times [2020-09-25 11:20:10,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:10,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605262184] [2020-09-25 11:20:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:10,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:10,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:15,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:15,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 11:20:15,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:20:15,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 11:20:15,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:15,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 11:20:15,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:16,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:16,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:16,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:20:16,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:16,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:20:16,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:16,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:16,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:16,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:16,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:16,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 11:20:16,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:16,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:16,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:20:16,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:20:16,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605262184] [2020-09-25 11:20:16,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:16,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:20:16,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146289432] [2020-09-25 11:20:16,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:20:16,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:16,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:20:16,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:16,306 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 11:20:18,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:18,082 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 11:20:18,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:20:18,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 11:20:18,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:18,091 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 11:20:18,091 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 11:20:18,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:20:18,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 11:20:18,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 11:20:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 11:20:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 11:20:18,132 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 160 [2020-09-25 11:20:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:18,135 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 11:20:18,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:20:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 11:20:18,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 11:20:18,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:18,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:20:18,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:20:18,151 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:18,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:18,151 INFO L82 PathProgramCache]: Analyzing trace with hash 935848482, now seen corresponding path program 1 times [2020-09-25 11:20:18,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:18,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569683529] [2020-09-25 11:20:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:18,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:18,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:18,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:18,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:23,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:23,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 11:20:23,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:23,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 11:20:23,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:23,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:20:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 11:20:23,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:23,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:23,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:23,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:23,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:23,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:20:23,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:23,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:23,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:23,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:23,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:23,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:23,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:23,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:23,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:23,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 11:20:23,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:23,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:23,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:23,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:20:23,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:23,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569683529] [2020-09-25 11:20:23,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:23,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:20:23,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455229968] [2020-09-25 11:20:23,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:20:23,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:23,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:20:23,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:20:23,861 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 11 states. [2020-09-25 11:20:26,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:26,314 INFO L93 Difference]: Finished difference Result 1614 states and 2050 transitions. [2020-09-25 11:20:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:20:26,315 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2020-09-25 11:20:26,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:26,322 INFO L225 Difference]: With dead ends: 1614 [2020-09-25 11:20:26,323 INFO L226 Difference]: Without dead ends: 1015 [2020-09-25 11:20:26,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:20:26,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-09-25 11:20:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 995. [2020-09-25 11:20:26,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 11:20:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1212 transitions. [2020-09-25 11:20:26,369 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1212 transitions. Word has length 170 [2020-09-25 11:20:26,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:26,370 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1212 transitions. [2020-09-25 11:20:26,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:20:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1212 transitions. [2020-09-25 11:20:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 11:20:26,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:26,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:20:26,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:20:26,375 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:26,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:26,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1528839770, now seen corresponding path program 1 times [2020-09-25 11:20:26,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:26,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293122691] [2020-09-25 11:20:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:26,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:26,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:26,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:27,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:29,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:29,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 11:20:29,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:20:29,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3190 [2020-09-25 11:20:29,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:29,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:29,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-25 11:20:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:29,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:29,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:29,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:29,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:29,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:20:29,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:29,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:29,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:29,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:29,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:29,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 11:20:29,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 11:20:29,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:29,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:20:29,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:30,036 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:30,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293122691] [2020-09-25 11:20:30,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:30,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:20:30,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753207801] [2020-09-25 11:20:30,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:30,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:30,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:30,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:30,041 INFO L87 Difference]: Start difference. First operand 995 states and 1212 transitions. Second operand 8 states. [2020-09-25 11:20:33,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:33,094 INFO L93 Difference]: Finished difference Result 2376 states and 2949 transitions. [2020-09-25 11:20:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:20:33,095 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 172 [2020-09-25 11:20:33,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:33,105 INFO L225 Difference]: With dead ends: 2376 [2020-09-25 11:20:33,105 INFO L226 Difference]: Without dead ends: 1546 [2020-09-25 11:20:33,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:20:33,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2020-09-25 11:20:33,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1505. [2020-09-25 11:20:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2020-09-25 11:20:33,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1792 transitions. [2020-09-25 11:20:33,177 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1792 transitions. Word has length 172 [2020-09-25 11:20:33,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:33,180 INFO L479 AbstractCegarLoop]: Abstraction has 1505 states and 1792 transitions. [2020-09-25 11:20:33,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:33,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1792 transitions. [2020-09-25 11:20:33,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 11:20:33,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:33,186 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:20:33,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:20:33,186 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:33,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:33,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1456275438, now seen corresponding path program 1 times [2020-09-25 11:20:33,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:33,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757849331] [2020-09-25 11:20:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:33,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:33,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:33,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:34,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:36,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:37,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:37,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:38,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 11:20:38,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:20:38,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 11:20:38,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:38,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 11:20:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:38,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:38,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:38,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:38,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:38,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:20:38,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:38,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:38,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:38,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:39,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:39,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 11:20:39,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:39,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-09-25 11:20:39,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:39,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:39,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:39,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:39,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 11:20:39,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:39,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757849331] [2020-09-25 11:20:39,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:39,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:20:39,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476835229] [2020-09-25 11:20:39,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:20:39,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:39,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:20:39,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:20:39,342 INFO L87 Difference]: Start difference. First operand 1505 states and 1792 transitions. Second operand 11 states. [2020-09-25 11:20:42,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:42,535 INFO L93 Difference]: Finished difference Result 3386 states and 4307 transitions. [2020-09-25 11:20:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:20:42,536 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 189 [2020-09-25 11:20:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:42,553 INFO L225 Difference]: With dead ends: 3386 [2020-09-25 11:20:42,553 INFO L226 Difference]: Without dead ends: 2491 [2020-09-25 11:20:42,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:20:42,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2020-09-25 11:20:42,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 2305. [2020-09-25 11:20:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-25 11:20:42,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 2811 transitions. [2020-09-25 11:20:42,655 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 2811 transitions. Word has length 189 [2020-09-25 11:20:42,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:42,656 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 2811 transitions. [2020-09-25 11:20:42,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:20:42,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 2811 transitions. [2020-09-25 11:20:42,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 11:20:42,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:42,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:20:42,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:20:42,662 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:42,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:42,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2121536478, now seen corresponding path program 1 times [2020-09-25 11:20:42,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:42,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553764609] [2020-09-25 11:20:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:42,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:42,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:47,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:47,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 11:20:47,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:47,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:20:47,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:47,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:47,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:47,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:47,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 11:20:47,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:47,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:47,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:47,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:47,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:47,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:47,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:20:47,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:47,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:47,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:47,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:47,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:48,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:48,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:48,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 11:20:48,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:48,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-25 11:20:48,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:48,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:48,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:48,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 11:20:48,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:48,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553764609] [2020-09-25 11:20:48,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:48,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:20:48,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240200529] [2020-09-25 11:20:48,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:20:48,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:48,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:20:48,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:20:48,529 INFO L87 Difference]: Start difference. First operand 2305 states and 2811 transitions. Second operand 10 states.