/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=0.4 --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/Problem14_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:52,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:52,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:52,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:52,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:52,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:52,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:52,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:52,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:52,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:52,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:52,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:52,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:52,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:52,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:52,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:52,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:52,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:52,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:52,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:52,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:52,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:52,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:52,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:52,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:52,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:52,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:52,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:52,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:52,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:52,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:52,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:52,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:52,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:52,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:52,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:52,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:52,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:52,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:52,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:52,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:52,312 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 13:35:52,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:52,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:52,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:52,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:52,370 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:52,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:52,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:52,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:52,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:52,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:52,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:52,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:52,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:52,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:52,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:52,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:52,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:52,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:52,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:52,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:52,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:52,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:52,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:52,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:52,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:52,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:52,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:52,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:52,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:52,378 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:35:52,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:52,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:52,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:52,877 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:52,878 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:52,879 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 13:35:52,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c58f1b4d/a04e421da6894ed6a9c62bc3729cb5bd/FLAG4ff543911 [2020-09-25 13:35:53,589 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:35:53,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 13:35:53,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c58f1b4d/a04e421da6894ed6a9c62bc3729cb5bd/FLAG4ff543911 [2020-09-25 13:35:53,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c58f1b4d/a04e421da6894ed6a9c62bc3729cb5bd [2020-09-25 13:35:53,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:35:53,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:35:53,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:53,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:35:53,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:35:53,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:53" (1/1) ... [2020-09-25 13:35:53,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:53, skipping insertion in model container [2020-09-25 13:35:53,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:53" (1/1) ... [2020-09-25 13:35:53,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:35:53,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:35:54,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:54,464 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:35:54,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:54,861 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:35:54,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:54 WrapperNode [2020-09-25 13:35:54,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:54,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:35:54,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:35:54,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:35:54,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:54" (1/1) ... [2020-09-25 13:35:54,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:54" (1/1) ... [2020-09-25 13:35:54,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:54" (1/1) ... [2020-09-25 13:35:54,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:54" (1/1) ... [2020-09-25 13:35:54,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:54" (1/1) ... [2020-09-25 13:35:55,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:54" (1/1) ... [2020-09-25 13:35:55,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:54" (1/1) ... [2020-09-25 13:35:55,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:35:55,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:35:55,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:35:55,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:35:55,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:54" (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 13:35:55,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:35:55,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:35:55,135 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:35:55,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:35:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:35:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:35:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:35:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:35:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:35:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:35:55,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:56,864 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:56,865 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:56,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:56 BoogieIcfgContainer [2020-09-25 13:35:56,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:56,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:56,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:56,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:56,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:35:53" (1/3) ... [2020-09-25 13:35:56,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b6d40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:56, skipping insertion in model container [2020-09-25 13:35:56,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:54" (2/3) ... [2020-09-25 13:35:56,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b6d40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:56, skipping insertion in model container [2020-09-25 13:35:56,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:56" (3/3) ... [2020-09-25 13:35:56,885 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2020-09-25 13:35:56,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:56,908 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:56,930 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:56,964 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:56,964 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:56,964 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:56,964 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:56,964 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:56,965 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:56,965 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:56,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:56,998 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 13:35:57,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 13:35:57,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:57,010 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] [2020-09-25 13:35:57,010 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:57,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:57,018 INFO L82 PathProgramCache]: Analyzing trace with hash -444760420, now seen corresponding path program 1 times [2020-09-25 13:35:57,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:57,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465933663] [2020-09-25 13:35:57,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:57,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:57,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:57,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:57,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 13:35:57,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:35:57,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-09-25 13:35:57,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:57,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:57,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:57,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:35:57,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 13:35:57,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 25 [2020-09-25 13:35:57,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:57,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:57,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:57,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:57,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:57,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:35:57,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:57,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:35:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:57,973 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 13:35:57,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465933663] [2020-09-25 13:35:57,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:57,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:35:57,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527247458] [2020-09-25 13:35:57,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:35:57,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:58,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:35:58,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:35:58,006 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 13:36:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:00,668 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 13:36:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:36:00,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 13:36:00,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:00,696 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 13:36:00,697 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 13:36:00,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 13:36:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 13:36:00,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 13:36:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 13:36:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 13:36:00,825 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 60 [2020-09-25 13:36:00,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:00,826 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 13:36:00,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:36:00,826 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 13:36:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 13:36:00,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:00,835 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:36:00,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:36:00,836 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:00,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:00,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1537556143, now seen corresponding path program 1 times [2020-09-25 13:36:00,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:00,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989598928] [2020-09-25 13:36:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:00,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:02,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:04,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:04,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:05,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:05,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 13:36:05,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:36:05,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4266 [2020-09-25 13:36:05,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:05,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:36:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:36:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 13:36:05,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:05,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:05,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:05,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:05,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:05,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:05,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:36:05,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:05,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:36:05,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:05,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:05,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:05,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:36:05,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:05,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 13:36:05,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:05,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:36:05,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:05,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989598928] [2020-09-25 13:36:05,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:05,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:36:05,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030317929] [2020-09-25 13:36:05,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:36:05,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:05,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:36:05,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:36:05,513 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 7 states. [2020-09-25 13:36:08,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:08,822 INFO L93 Difference]: Finished difference Result 2101 states and 2645 transitions. [2020-09-25 13:36:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:36:08,823 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-09-25 13:36:08,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:08,832 INFO L225 Difference]: With dead ends: 2101 [2020-09-25 13:36:08,833 INFO L226 Difference]: Without dead ends: 1310 [2020-09-25 13:36:08,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:36:08,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-09-25 13:36:08,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1192. [2020-09-25 13:36:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-09-25 13:36:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1447 transitions. [2020-09-25 13:36:08,890 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1447 transitions. Word has length 139 [2020-09-25 13:36:08,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:08,892 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1447 transitions. [2020-09-25 13:36:08,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:36:08,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1447 transitions. [2020-09-25 13:36:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 13:36:08,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:08,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:36:08,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:36:08,908 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:08,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:08,908 INFO L82 PathProgramCache]: Analyzing trace with hash 791250278, now seen corresponding path program 1 times [2020-09-25 13:36:08,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:08,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252653896] [2020-09-25 13:36:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:08,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:09,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:09,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:09,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:10,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:11,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:11,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:11,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 13:36:11,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:36:11,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2760 [2020-09-25 13:36:11,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:11,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:11,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:36:11,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:36:11,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 13:36:11,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:11,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:11,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:11,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:11,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:11,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:11,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:36:11,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:11,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:36:11,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:11,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:11,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:11,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:11,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:36:11,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:11,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 13:36:11,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:11,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:36:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:12,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252653896] [2020-09-25 13:36:12,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:12,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:36:12,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510630806] [2020-09-25 13:36:12,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:36:12,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:12,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:36:12,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:36:12,116 INFO L87 Difference]: Start difference. First operand 1192 states and 1447 transitions. Second operand 7 states. [2020-09-25 13:36:15,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:15,495 INFO L93 Difference]: Finished difference Result 3085 states and 3861 transitions. [2020-09-25 13:36:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:36:15,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-09-25 13:36:15,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:15,508 INFO L225 Difference]: With dead ends: 3085 [2020-09-25 13:36:15,508 INFO L226 Difference]: Without dead ends: 1908 [2020-09-25 13:36:15,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:36:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-09-25 13:36:15,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1862. [2020-09-25 13:36:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1862 states. [2020-09-25 13:36:15,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2199 transitions. [2020-09-25 13:36:15,603 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2199 transitions. Word has length 142 [2020-09-25 13:36:15,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:15,605 INFO L479 AbstractCegarLoop]: Abstraction has 1862 states and 2199 transitions. [2020-09-25 13:36:15,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:36:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2199 transitions. [2020-09-25 13:36:15,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 13:36:15,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:15,612 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:36:15,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:36:15,613 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:15,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:15,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1665918402, now seen corresponding path program 1 times [2020-09-25 13:36:15,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:15,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944286325] [2020-09-25 13:36:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:15,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:15,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:16,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:16,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:20,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:20,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 13:36:20,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:36:20,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 13:36:20,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:20,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:36:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:36:20,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-25 13:36:20,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:20,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:20,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:20,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:20,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:36:20,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:20,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:36:20,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:20,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:20,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:21,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:21,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 13:36:21,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:36:21,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 13:36:21,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:21,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:21,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:36:21,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 13:36:21,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:21,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 13:36:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:21,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:21,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 13:36:21,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:21,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 13:36:21,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:21,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 13:36:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:21,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944286325] [2020-09-25 13:36:21,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:21,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:36:21,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132318234] [2020-09-25 13:36:21,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:36:21,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:21,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:36:21,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:36:21,715 INFO L87 Difference]: Start difference. First operand 1862 states and 2199 transitions. Second operand 8 states. [2020-09-25 13:36:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:26,325 INFO L93 Difference]: Finished difference Result 4466 states and 5452 transitions. [2020-09-25 13:36:26,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:36:26,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 247 [2020-09-25 13:36:26,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:26,340 INFO L225 Difference]: With dead ends: 4466 [2020-09-25 13:36:26,340 INFO L226 Difference]: Without dead ends: 2808 [2020-09-25 13:36:26,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:36:26,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2020-09-25 13:36:26,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2449. [2020-09-25 13:36:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2449 states. [2020-09-25 13:36:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 2894 transitions. [2020-09-25 13:36:26,412 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 2894 transitions. Word has length 247 [2020-09-25 13:36:26,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:26,413 INFO L479 AbstractCegarLoop]: Abstraction has 2449 states and 2894 transitions. [2020-09-25 13:36:26,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:36:26,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 2894 transitions. [2020-09-25 13:36:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-25 13:36:26,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:26,419 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:36:26,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:36:26,419 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:26,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:26,420 INFO L82 PathProgramCache]: Analyzing trace with hash -192469169, now seen corresponding path program 1 times [2020-09-25 13:36:26,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:26,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993662451] [2020-09-25 13:36:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:26,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:26,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:29,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:30,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:31,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:31,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-09-25 13:36:31,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:36:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 13:36:31,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:31,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-25 13:36:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 13:36:31,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:31,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:31,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:31,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:31,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:31,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:31,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:36:31,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:31,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:31,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:31,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:31,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:31,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 13:36:31,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:31,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 13:36:31,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:31,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:31,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:31,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 13:36:31,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:31,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 13:36:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:31,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:32,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:32,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 13:36:32,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:32,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 13:36:32,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:32,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:32,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:32,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:32,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 13:36:32,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:32,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993662451] [2020-09-25 13:36:32,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:32,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:36:32,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000778543] [2020-09-25 13:36:32,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:36:32,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:32,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:36:32,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:36:32,264 INFO L87 Difference]: Start difference. First operand 2449 states and 2894 transitions. Second operand 7 states. [2020-09-25 13:36:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:35,688 INFO L93 Difference]: Finished difference Result 5326 states and 6504 transitions. [2020-09-25 13:36:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:36:35,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-09-25 13:36:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:35,702 INFO L225 Difference]: With dead ends: 5326 [2020-09-25 13:36:35,702 INFO L226 Difference]: Without dead ends: 2191 [2020-09-25 13:36:35,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:36:35,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2020-09-25 13:36:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 1932. [2020-09-25 13:36:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1932 states. [2020-09-25 13:36:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2082 transitions. [2020-09-25 13:36:35,772 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2082 transitions. Word has length 302 [2020-09-25 13:36:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:35,772 INFO L479 AbstractCegarLoop]: Abstraction has 1932 states and 2082 transitions. [2020-09-25 13:36:35,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:36:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2082 transitions. [2020-09-25 13:36:35,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-09-25 13:36:35,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:35,784 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:36:35,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:36:35,784 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:35,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:35,793 INFO L82 PathProgramCache]: Analyzing trace with hash 398365444, now seen corresponding path program 1 times [2020-09-25 13:36:35,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:35,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53692076] [2020-09-25 13:36:35,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:35,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:36,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:38,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:40,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:40,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 525 [2020-09-25 13:36:40,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:36:40,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:36:40,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:40,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:40,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:40,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 280 [2020-09-25 13:36:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-09-25 13:36:40,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:41,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:41,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:41,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:41,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:41,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:41,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:36:41,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:41,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:41,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:41,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:41,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:41,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:41,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:41,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:41,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 13:36:41,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:41,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:36:41,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:41,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:41,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:41,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 13:36:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:41,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:41,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:41,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 13:36:41,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:41,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 13:36:41,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:41,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:41,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:41,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:41,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 13:36:41,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:41,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-25 13:36:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:41,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:41,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:41,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 13:36:41,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:41,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-09-25 13:36:41,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:41,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 13:36:41,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1