/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=0.5 --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_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:43:40,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:43:40,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:43:40,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:43:40,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:43:40,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:43:40,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:43:40,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:43:40,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:43:40,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:43:40,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:43:40,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:43:40,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:43:40,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:43:40,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:43:40,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:43:40,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:43:40,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:43:40,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:43:40,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:43:40,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:43:40,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:43:40,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:43:40,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:43:40,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:43:40,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:43:40,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:43:40,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:43:40,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:43:40,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:43:40,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:43:40,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:43:40,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:43:40,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:43:40,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:43:40,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:43:40,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:43:40,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:43:40,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:43:40,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:43:40,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:43:40,268 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 14:43:40,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:43:40,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:43:40,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:43:40,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:43:40,295 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:43:40,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:43:40,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:43:40,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:43:40,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:43:40,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:43:40,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:43:40,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:43:40,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:43:40,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:43:40,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:43:40,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:43:40,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:43:40,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:43:40,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:43:40,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:43:40,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:43:40,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:43:40,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:43:40,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:43:40,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:43:40,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:43:40,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:43:40,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:43:40,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:43:40,300 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:43:40,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:43:40,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:43:40,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:43:40,823 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:43:40,825 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:43:40,826 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 14:43:40,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40446fe35/7d2bf1151851453c8e03cd3ff02fbf73/FLAG219416fef [2020-09-25 14:43:41,618 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:43:41,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 14:43:41,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40446fe35/7d2bf1151851453c8e03cd3ff02fbf73/FLAG219416fef [2020-09-25 14:43:41,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40446fe35/7d2bf1151851453c8e03cd3ff02fbf73 [2020-09-25 14:43:41,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:43:41,855 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:43:41,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:41,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:43:41,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:43:41,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:41" (1/1) ... [2020-09-25 14:43:41,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629d3d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:41, skipping insertion in model container [2020-09-25 14:43:41,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:41" (1/1) ... [2020-09-25 14:43:41,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:43:41,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:43:42,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:42,565 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:43:42,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:42,828 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:43:42,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:42 WrapperNode [2020-09-25 14:43:42,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:42,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:43:42,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:43:42,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:43:42,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:42" (1/1) ... [2020-09-25 14:43:42,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:42" (1/1) ... [2020-09-25 14:43:42,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:42" (1/1) ... [2020-09-25 14:43:42,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:42" (1/1) ... [2020-09-25 14:43:43,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:42" (1/1) ... [2020-09-25 14:43:43,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:42" (1/1) ... [2020-09-25 14:43:43,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:42" (1/1) ... [2020-09-25 14:43:43,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:43:43,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:43:43,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:43:43,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:43:43,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:42" (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 14:43:43,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:43:43,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:43:43,210 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:43:43,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:43:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:43:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:43:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:43:43,214 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:43:43,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:43:43,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:43:43,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:43:45,143 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:43:45,144 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:43:45,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:45 BoogieIcfgContainer [2020-09-25 14:43:45,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:43:45,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:43:45,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:43:45,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:43:45,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:43:41" (1/3) ... [2020-09-25 14:43:45,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd2f6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:45, skipping insertion in model container [2020-09-25 14:43:45,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:42" (2/3) ... [2020-09-25 14:43:45,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd2f6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:45, skipping insertion in model container [2020-09-25 14:43:45,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:45" (3/3) ... [2020-09-25 14:43:45,170 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label38.c [2020-09-25 14:43:45,186 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:43:45,198 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:43:45,223 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:43:45,266 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:43:45,266 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:43:45,266 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:43:45,266 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:43:45,266 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:43:45,267 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:43:45,267 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:43:45,267 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:43:45,304 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 14:43:45,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 14:43:45,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:45,318 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] [2020-09-25 14:43:45,319 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:45,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:45,328 INFO L82 PathProgramCache]: Analyzing trace with hash -496136462, now seen corresponding path program 1 times [2020-09-25 14:43:45,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:45,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973664715] [2020-09-25 14:43:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:45,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:45,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:46,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:43:46,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:43:46,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1079 [2020-09-25 14:43:46,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:46,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:43:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 14:43:46,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:43:46,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:46,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:46,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:46,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:43:46,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:46,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:43:46,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:46,847 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 14:43:46,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973664715] [2020-09-25 14:43:46,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:46,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:43:46,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393439372] [2020-09-25 14:43:46,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:43:46,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:46,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:43:46,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:46,882 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 14:43:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:50,633 INFO L93 Difference]: Finished difference Result 1766 states and 2493 transitions. [2020-09-25 14:43:50,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:43:50,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 14:43:50,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:50,666 INFO L225 Difference]: With dead ends: 1766 [2020-09-25 14:43:50,666 INFO L226 Difference]: Without dead ends: 1025 [2020-09-25 14:43:50,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-25 14:43:50,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 995. [2020-09-25 14:43:50,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 14:43:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1343 transitions. [2020-09-25 14:43:50,805 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1343 transitions. Word has length 69 [2020-09-25 14:43:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:50,806 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1343 transitions. [2020-09-25 14:43:50,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:43:50,806 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1343 transitions. [2020-09-25 14:43:50,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 14:43:50,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:50,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:50,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:43:50,820 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:50,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:50,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1110466945, now seen corresponding path program 1 times [2020-09-25 14:43:50,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:50,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340389362] [2020-09-25 14:43:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:50,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:53,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:55,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:55,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 14:43:55,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:55,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 14:43:55,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:55,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 14:43:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 14:43:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:56,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:56,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:56,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:56,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:56,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:43:56,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:56,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:56,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:56,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:56,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:56,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:56,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:56,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 14:43:56,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:56,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 14:43:56,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:56,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 14:43:56,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:56,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340389362] [2020-09-25 14:43:56,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:56,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:43:56,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938749414] [2020-09-25 14:43:56,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:43:56,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:56,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:43:56,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:56,325 INFO L87 Difference]: Start difference. First operand 995 states and 1343 transitions. Second operand 5 states. [2020-09-25 14:43:58,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:58,481 INFO L93 Difference]: Finished difference Result 2673 states and 3757 transitions. [2020-09-25 14:43:58,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:43:58,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 14:43:58,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:58,495 INFO L225 Difference]: With dead ends: 2673 [2020-09-25 14:43:58,495 INFO L226 Difference]: Without dead ends: 1693 [2020-09-25 14:43:58,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:43:58,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2020-09-25 14:43:58,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1276. [2020-09-25 14:43:58,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-09-25 14:43:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1728 transitions. [2020-09-25 14:43:58,561 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1728 transitions. Word has length 153 [2020-09-25 14:43:58,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:58,562 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 1728 transitions. [2020-09-25 14:43:58,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:43:58,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1728 transitions. [2020-09-25 14:43:58,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 14:43:58,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:58,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:58,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:58,574 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:58,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:58,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1882195166, now seen corresponding path program 1 times [2020-09-25 14:43:58,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:58,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514181821] [2020-09-25 14:43:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:58,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:58,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:59,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:03,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:03,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:03,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:03,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 14:44:03,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:44:03,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-09-25 14:44:03,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:03,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:03,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:44:03,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:44:03,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 14:44:03,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:03,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:44:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:03,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:03,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:03,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:44:03,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:03,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:44:03,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:03,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:03,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:44:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:44:03,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:03,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:44:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:03,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:04,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:04,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 14:44:04,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:04,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 14:44:04,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:04,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:44:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 14:44:04,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:44:04,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514181821] [2020-09-25 14:44:04,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:44:04,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:44:04,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673713665] [2020-09-25 14:44:04,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:44:04,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:44:04,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:44:04,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:44:04,322 INFO L87 Difference]: Start difference. First operand 1276 states and 1728 transitions. Second operand 7 states. [2020-09-25 14:44:07,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:44:07,427 INFO L93 Difference]: Finished difference Result 3264 states and 4547 transitions. [2020-09-25 14:44:07,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:44:07,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-09-25 14:44:07,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:44:07,444 INFO L225 Difference]: With dead ends: 3264 [2020-09-25 14:44:07,444 INFO L226 Difference]: Without dead ends: 2003 [2020-09-25 14:44:07,451 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 14:44:07,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2020-09-25 14:44:07,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1477. [2020-09-25 14:44:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1477 states. [2020-09-25 14:44:07,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 1912 transitions. [2020-09-25 14:44:07,509 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 1912 transitions. Word has length 221 [2020-09-25 14:44:07,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:44:07,510 INFO L479 AbstractCegarLoop]: Abstraction has 1477 states and 1912 transitions. [2020-09-25 14:44:07,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:44:07,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 1912 transitions. [2020-09-25 14:44:07,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-09-25 14:44:07,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:44:07,518 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:44:07,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:44:07,519 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:44:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:44:07,519 INFO L82 PathProgramCache]: Analyzing trace with hash -592730585, now seen corresponding path program 1 times [2020-09-25 14:44:07,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:44:07,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063987671] [2020-09-25 14:44:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:44:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:07,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:07,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:07,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:08,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:08,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:09,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:11,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:12,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:12,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:12,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-09-25 14:44:12,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:44:12,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:44:12,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:12,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:12,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:12,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:44:12,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 14:44:12,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:12,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:44:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:12,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:12,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:44:12,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:12,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:44:12,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:12,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:44:12,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:12,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:44:12,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:12,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:44:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:12,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:12,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:12,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:44:12,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 14:44:12,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:12,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:44:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:44:12,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:12,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:44:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:12,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:13,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:13,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 14:44:13,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:13,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-25 14:44:13,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:13,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:13,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:13,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:44:13,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 14:44:13,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:44:13,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063987671] [2020-09-25 14:44:13,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:44:13,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:44:13,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203123915] [2020-09-25 14:44:13,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:44:13,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:44:13,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:44:13,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:44:13,501 INFO L87 Difference]: Start difference. First operand 1477 states and 1912 transitions. Second operand 7 states. [2020-09-25 14:44:16,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:44:16,194 INFO L93 Difference]: Finished difference Result 3598 states and 4818 transitions. [2020-09-25 14:44:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:44:16,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-09-25 14:44:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:44:16,216 INFO L225 Difference]: With dead ends: 3598 [2020-09-25 14:44:16,217 INFO L226 Difference]: Without dead ends: 2136 [2020-09-25 14:44:16,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 14:44:16,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2020-09-25 14:44:16,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2094. [2020-09-25 14:44:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-09-25 14:44:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2661 transitions. [2020-09-25 14:44:16,296 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2661 transitions. Word has length 300 [2020-09-25 14:44:16,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:44:16,298 INFO L479 AbstractCegarLoop]: Abstraction has 2094 states and 2661 transitions. [2020-09-25 14:44:16,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:44:16,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2661 transitions. [2020-09-25 14:44:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-09-25 14:44:16,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:44:16,310 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:44:16,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:44:16,311 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:44:16,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:44:16,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1170460672, now seen corresponding path program 1 times [2020-09-25 14:44:16,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:44:16,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121481429] [2020-09-25 14:44:16,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:44:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:16,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:16,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:17,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:18,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:21,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:21,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-09-25 14:44:21,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:44:21,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 14:44:21,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:21,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 14:44:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 14:44:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:21,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:44:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:21,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:21,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:21,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:44:21,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:21,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:44:21,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:21,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:21,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:44:21,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:21,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:44:21,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:21,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:44:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:21,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:21,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:21,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 14:44:21,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 14:44:21,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:21,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:44:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 14:44:21,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:21,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-25 14:44:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:22,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:22,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 14:44:22,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:22,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 14:44:22,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:22,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:44:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 14:44:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:44:22,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121481429] [2020-09-25 14:44:22,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:44:22,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:44:22,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674288293] [2020-09-25 14:44:22,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:44:22,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:44:22,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:44:22,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:44:22,216 INFO L87 Difference]: Start difference. First operand 2094 states and 2661 transitions. Second operand 7 states. [2020-09-25 14:44:25,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:44:25,731 INFO L93 Difference]: Finished difference Result 4950 states and 6564 transitions. [2020-09-25 14:44:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:44:25,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-09-25 14:44:25,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:44:25,748 INFO L225 Difference]: With dead ends: 4950 [2020-09-25 14:44:25,749 INFO L226 Difference]: Without dead ends: 3060 [2020-09-25 14:44:25,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:44:25,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2020-09-25 14:44:25,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 2800. [2020-09-25 14:44:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2800 states. [2020-09-25 14:44:25,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2800 states to 2800 states and 3558 transitions. [2020-09-25 14:44:25,835 INFO L78 Accepts]: Start accepts. Automaton has 2800 states and 3558 transitions. Word has length 370 [2020-09-25 14:44:25,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:44:25,835 INFO L479 AbstractCegarLoop]: Abstraction has 2800 states and 3558 transitions. [2020-09-25 14:44:25,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:44:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2800 states and 3558 transitions. [2020-09-25 14:44:25,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-09-25 14:44:25,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:44:25,846 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:25,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:44:25,846 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:44:25,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:44:25,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1726318622, now seen corresponding path program 1 times [2020-09-25 14:44:25,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:44:25,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964151466] [2020-09-25 14:44:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:44:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:26,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:26,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking...