/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/Problem01_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:29:34,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:29:34,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:29:34,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:29:34,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:29:34,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:29:34,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:29:34,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:29:34,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:29:34,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:29:34,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:29:34,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:29:34,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:29:34,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:29:34,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:29:34,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:29:34,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:29:34,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:29:34,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:29:34,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:29:34,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:29:34,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:29:34,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:29:34,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:29:34,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:29:34,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:29:34,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:29:34,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:29:34,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:29:34,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:29:34,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:29:34,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:29:34,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:29:34,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:29:34,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:29:34,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:29:34,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:29:34,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:29:34,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:29:34,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:29:34,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:29:34,272 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 13:29:34,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:29:34,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:29:34,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:29:34,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:29:34,342 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:29:34,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:29:34,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:29:34,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:29:34,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:29:34,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:29:34,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:29:34,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:29:34,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:29:34,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:29:34,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:29:34,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:29:34,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:29:34,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:29:34,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:29:34,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:29:34,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:29:34,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:29:34,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:29:34,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:29:34,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:29:34,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:29:34,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:29:34,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:29:34,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:29:34,348 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 13:29:34,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:29:34,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:29:34,860 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:29:34,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:29:34,862 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:29:34,863 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 13:29:34,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/584b37942/19dc657f7dfb4012a106ef574d3c3c5e/FLAG01a9de47a [2020-09-25 13:29:35,598 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:29:35,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 13:29:35,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/584b37942/19dc657f7dfb4012a106ef574d3c3c5e/FLAG01a9de47a [2020-09-25 13:29:35,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/584b37942/19dc657f7dfb4012a106ef574d3c3c5e [2020-09-25 13:29:35,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:29:35,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:29:35,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:35,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:29:35,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:29:35,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:35" (1/1) ... [2020-09-25 13:29:35,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef6092a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:35, skipping insertion in model container [2020-09-25 13:29:35,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:35" (1/1) ... [2020-09-25 13:29:35,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:29:35,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:29:36,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:36,531 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:29:36,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:36,736 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:29:36,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:36 WrapperNode [2020-09-25 13:29:36,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:36,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:29:36,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:29:36,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:29:36,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:36" (1/1) ... [2020-09-25 13:29:36,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:36" (1/1) ... [2020-09-25 13:29:36,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:36" (1/1) ... [2020-09-25 13:29:36,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:36" (1/1) ... [2020-09-25 13:29:36,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:36" (1/1) ... [2020-09-25 13:29:36,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:36" (1/1) ... [2020-09-25 13:29:36,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:36" (1/1) ... [2020-09-25 13:29:36,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:29:36,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:29:36,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:29:36,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:29:36,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:36" (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 13:29:36,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:29:36,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:29:36,932 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:29:36,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:29:36,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:29:36,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:29:36,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:29:36,933 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:29:36,933 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:29:36,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:29:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:29:38,314 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:29:38,314 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:29:38,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:38 BoogieIcfgContainer [2020-09-25 13:29:38,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:29:38,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:29:38,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:29:38,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:29:38,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:29:35" (1/3) ... [2020-09-25 13:29:38,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2157320b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:38, skipping insertion in model container [2020-09-25 13:29:38,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:36" (2/3) ... [2020-09-25 13:29:38,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2157320b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:38, skipping insertion in model container [2020-09-25 13:29:38,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:38" (3/3) ... [2020-09-25 13:29:38,336 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2020-09-25 13:29:38,348 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:29:38,360 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:29:38,384 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:29:38,419 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:29:38,419 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:29:38,420 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:29:38,420 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:29:38,420 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:29:38,420 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:29:38,420 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:29:38,420 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:29:38,453 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:29:38,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 13:29:38,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:38,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:38,474 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:38,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:38,483 INFO L82 PathProgramCache]: Analyzing trace with hash -857113145, now seen corresponding path program 1 times [2020-09-25 13:29:38,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:38,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405234315] [2020-09-25 13:29:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:39,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:40,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:41,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:42,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:43,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:43,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 13:29:43,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:29:43,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:29:43,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:43,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:43,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:29:43,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:29:43,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 13:29:43,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:29:43,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:43,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:44,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:44,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:44,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:44,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 13:29:44,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:44,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:29:44,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:44,132 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 13:29:44,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405234315] [2020-09-25 13:29:44,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:29:44,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:29:44,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417357056] [2020-09-25 13:29:44,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:29:44,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:44,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:29:44,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:29:44,175 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 13:29:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:46,277 INFO L93 Difference]: Finished difference Result 1231 states and 1630 transitions. [2020-09-25 13:29:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:29:46,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-09-25 13:29:46,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:46,305 INFO L225 Difference]: With dead ends: 1231 [2020-09-25 13:29:46,305 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 13:29:46,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:46,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 13:29:46,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 603. [2020-09-25 13:29:46,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 13:29:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 707 transitions. [2020-09-25 13:29:46,435 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 707 transitions. Word has length 110 [2020-09-25 13:29:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:46,436 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 707 transitions. [2020-09-25 13:29:46,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:29:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 707 transitions. [2020-09-25 13:29:46,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 13:29:46,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:46,445 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:29:46,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:29:46,446 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:46,446 INFO L82 PathProgramCache]: Analyzing trace with hash 703741270, now seen corresponding path program 1 times [2020-09-25 13:29:46,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:46,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450206554] [2020-09-25 13:29:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:46,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:47,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:47,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 13:29:47,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:29:47,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1423 [2020-09-25 13:29:47,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:47,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 13:29:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 13:29:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:48,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:48,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:48,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:48,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:48,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:48,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:29:48,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:48,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:48,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:48,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:48,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:48,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:48,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:48,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:48,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:29:48,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:48,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:29:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:48,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450206554] [2020-09-25 13:29:48,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:48,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:48,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709861865] [2020-09-25 13:29:48,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:48,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:48,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:48,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:48,168 INFO L87 Difference]: Start difference. First operand 603 states and 707 transitions. Second operand 5 states. [2020-09-25 13:29:50,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:50,206 INFO L93 Difference]: Finished difference Result 1559 states and 1895 transitions. [2020-09-25 13:29:50,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:50,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-09-25 13:29:50,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:50,215 INFO L225 Difference]: With dead ends: 1559 [2020-09-25 13:29:50,215 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 13:29:50,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:29:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 13:29:50,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 889. [2020-09-25 13:29:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 13:29:50,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1082 transitions. [2020-09-25 13:29:50,266 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1082 transitions. Word has length 131 [2020-09-25 13:29:50,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:50,268 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1082 transitions. [2020-09-25 13:29:50,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:50,268 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1082 transitions. [2020-09-25 13:29:50,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 13:29:50,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:50,273 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:29:50,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:29:50,274 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:50,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:50,274 INFO L82 PathProgramCache]: Analyzing trace with hash 772380757, now seen corresponding path program 1 times [2020-09-25 13:29:50,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:50,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322901084] [2020-09-25 13:29:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:50,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:51,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:51,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:52,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:55,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:55,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:55,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 13:29:55,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:29:55,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 13:29:55,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:55,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 13:29:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 13:29:55,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:55,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:55,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:55,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:55,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:55,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:55,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:29:55,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:55,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:55,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:55,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:55,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:55,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:55,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:55,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:55,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:55,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:29:55,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:55,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:29:55,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:55,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:29:55,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:55,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322901084] [2020-09-25 13:29:55,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:55,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:55,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169855823] [2020-09-25 13:29:55,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:55,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:55,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:55,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:55,668 INFO L87 Difference]: Start difference. First operand 889 states and 1082 transitions. Second operand 5 states. [2020-09-25 13:29:58,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:58,038 INFO L93 Difference]: Finished difference Result 2133 states and 2671 transitions. [2020-09-25 13:29:58,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:58,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 13:29:58,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:58,056 INFO L225 Difference]: With dead ends: 2133 [2020-09-25 13:29:58,057 INFO L226 Difference]: Without dead ends: 1268 [2020-09-25 13:29:58,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:29:58,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2020-09-25 13:29:58,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1034. [2020-09-25 13:29:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-09-25 13:29:58,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1274 transitions. [2020-09-25 13:29:58,104 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1274 transitions. Word has length 132 [2020-09-25 13:29:58,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:58,105 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1274 transitions. [2020-09-25 13:29:58,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:58,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1274 transitions. [2020-09-25 13:29:58,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 13:29:58,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:58,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:58,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:29:58,150 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:58,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:58,151 INFO L82 PathProgramCache]: Analyzing trace with hash -439956008, now seen corresponding path program 1 times [2020-09-25 13:29:58,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:58,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089023920] [2020-09-25 13:29:58,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:58,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:03,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:03,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 13:30:03,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:30:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:30:03,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:03,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 13:30:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:30:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 13:30:03,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:03,886 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-09-25 13:30:04,075 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-09-25 13:30:04,352 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 53 [2020-09-25 13:30:04,618 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2020-09-25 13:30:04,856 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 46 [2020-09-25 13:30:05,051 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 42 [2020-09-25 13:30:05,242 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 36 [2020-09-25 13:30:05,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:05,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:05,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:05,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:05,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 13:30:05,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:05,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:30:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:30:05,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:05,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:05,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:05,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:05,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:05,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:30:05,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:30:05,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 13:30:05,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:05,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:30:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:30:05,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:06,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089023920] [2020-09-25 13:30:06,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:06,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 13:30:06,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087634236] [2020-09-25 13:30:06,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 13:30:06,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:06,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 13:30:06,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:30:06,068 INFO L87 Difference]: Start difference. First operand 1034 states and 1274 transitions. Second operand 17 states. [2020-09-25 13:30:08,480 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2020-09-25 13:30:08,761 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-09-25 13:30:09,411 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-09-25 13:30:09,595 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 13:30:09,765 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 13:30:10,382 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-25 13:30:10,870 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-25 13:30:11,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:11,862 INFO L93 Difference]: Finished difference Result 3554 states and 4671 transitions. [2020-09-25 13:30:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 13:30:11,864 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 147 [2020-09-25 13:30:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:11,891 INFO L225 Difference]: With dead ends: 3554 [2020-09-25 13:30:11,891 INFO L226 Difference]: Without dead ends: 2544 [2020-09-25 13:30:11,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=231, Invalid=825, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 13:30:11,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2020-09-25 13:30:11,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 1996. [2020-09-25 13:30:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1996 states. [2020-09-25 13:30:12,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 2483 transitions. [2020-09-25 13:30:12,009 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 2483 transitions. Word has length 147 [2020-09-25 13:30:12,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:12,009 INFO L479 AbstractCegarLoop]: Abstraction has 1996 states and 2483 transitions. [2020-09-25 13:30:12,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 13:30:12,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 2483 transitions. [2020-09-25 13:30:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 13:30:12,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:12,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:12,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:30:12,018 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:12,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:12,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1709240601, now seen corresponding path program 1 times [2020-09-25 13:30:12,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:12,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486968993] [2020-09-25 13:30:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:12,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:17,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 13:30:17,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:30:17,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 13:30:17,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:17,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:17,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 13:30:17,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 13:30:17,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:17,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:17,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:17,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:17,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:30:17,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:17,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:17,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:17,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:17,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:17,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 13:30:17,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:17,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 13:30:17,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:17,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:30:17,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:17,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486968993] [2020-09-25 13:30:17,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:17,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:17,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122455366] [2020-09-25 13:30:17,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:17,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:17,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:17,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:17,342 INFO L87 Difference]: Start difference. First operand 1996 states and 2483 transitions. Second operand 5 states. [2020-09-25 13:30:19,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:19,280 INFO L93 Difference]: Finished difference Result 5148 states and 6581 transitions. [2020-09-25 13:30:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:19,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 13:30:19,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:19,302 INFO L225 Difference]: With dead ends: 5148 [2020-09-25 13:30:19,302 INFO L226 Difference]: Without dead ends: 3176 [2020-09-25 13:30:19,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:19,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2020-09-25 13:30:19,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2850. [2020-09-25 13:30:19,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2850 states. [2020-09-25 13:30:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 3605 transitions. [2020-09-25 13:30:19,426 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 3605 transitions. Word has length 153 [2020-09-25 13:30:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:19,426 INFO L479 AbstractCegarLoop]: Abstraction has 2850 states and 3605 transitions. [2020-09-25 13:30:19,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 3605 transitions. [2020-09-25 13:30:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 13:30:19,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:19,438 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:30:19,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:30:19,439 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:19,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:19,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1020396383, now seen corresponding path program 1 times [2020-09-25 13:30:19,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:19,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176918899] [2020-09-25 13:30:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:19,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:19,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:19,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking...