/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:33,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:33,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:33,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:33,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:33,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:33,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:33,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:33,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:33,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:33,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:33,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:33,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:33,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:33,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:33,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:33,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:33,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:33,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:33,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:33,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:33,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:33,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:33,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:33,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:33,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:33,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:33,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:33,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:33,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:33,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:33,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:33,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:33,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:33,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:33,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:33,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:33,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:33,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:33,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:33,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:33,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:18:33,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:33,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:33,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:33,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:33,368 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:33,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:33,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:33,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:33,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:33,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:33,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:33,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:33,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:33,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:33,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:33,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:33,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:33,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:33,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:33,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:33,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:33,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:33,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:33,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:33,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:33,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:33,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:33,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:33,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:33,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:18:33,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:33,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:33,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:33,826 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:33,827 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:33,828 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 11:18:33,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78c5a4672/e1ff6d2875b94392a1682a7b6dffc759/FLAG716c84447 [2020-09-25 11:18:34,543 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:34,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 11:18:34,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78c5a4672/e1ff6d2875b94392a1682a7b6dffc759/FLAG716c84447 [2020-09-25 11:18:34,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78c5a4672/e1ff6d2875b94392a1682a7b6dffc759 [2020-09-25 11:18:34,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:34,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:34,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:34,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:34,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:34,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:34" (1/1) ... [2020-09-25 11:18:34,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:34, skipping insertion in model container [2020-09-25 11:18:34,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:34" (1/1) ... [2020-09-25 11:18:34,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:34,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:35,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:35,463 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:35,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:35,603 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:35,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35 WrapperNode [2020-09-25 11:18:35,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:35,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:35,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:35,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:35,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:35,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:35,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:35,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:35,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:35,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:35,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:35,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:35,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:35,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:35,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:35,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:35,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:35,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:35,849 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:35,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:18:37,421 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:18:37,421 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:18:37,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:37 BoogieIcfgContainer [2020-09-25 11:18:37,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:18:37,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:18:37,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:18:37,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:18:37,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:34" (1/3) ... [2020-09-25 11:18:37,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:37, skipping insertion in model container [2020-09-25 11:18:37,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (2/3) ... [2020-09-25 11:18:37,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:37, skipping insertion in model container [2020-09-25 11:18:37,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:37" (3/3) ... [2020-09-25 11:18:37,442 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2020-09-25 11:18:37,455 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:18:37,467 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:18:37,490 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:18:37,543 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:18:37,543 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:18:37,543 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:18:37,544 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:18:37,544 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:18:37,544 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:18:37,544 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:18:37,544 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:18:37,594 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:18:37,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 11:18:37,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:37,615 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] [2020-09-25 11:18:37,616 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:37,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:37,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1834886135, now seen corresponding path program 1 times [2020-09-25 11:18:37,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:37,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-25 11:18:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:37,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:38,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:18:38,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:18:38,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-09-25 11:18:38,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:38,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:18:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 11:18:38,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:18:38,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:38,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:38,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:38,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:18:38,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:38,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:18:38,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:38,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-25 11:18:38,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:38,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:18:38,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011566804] [2020-09-25 11:18:38,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:18:38,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:38,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:18:38,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:18:38,852 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:18:40,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:40,815 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 11:18:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:18:40,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 11:18:40,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:40,839 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 11:18:40,839 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 11:18:40,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 11:18:40,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 11:18:40,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 11:18:40,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 11:18:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 11:18:40,948 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 67 [2020-09-25 11:18:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:40,949 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 11:18:40,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:18:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 11:18:40,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 11:18:40,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:40,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:40,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:18:40,957 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:40,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:40,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1798381656, now seen corresponding path program 1 times [2020-09-25 11:18:40,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:40,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423981341] [2020-09-25 11:18:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:41,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:42,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:46,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 11:18:46,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:18:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 11:18:46,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:46,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:18:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 11:18:46,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:18:46,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:46,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:46,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:46,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:18:46,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:46,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:18:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:46,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:46,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:46,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:18:46,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:46,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 11:18:46,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:46,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:46,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:46,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:18:46,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:18:46,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423981341] [2020-09-25 11:18:46,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:46,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:18:46,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759969441] [2020-09-25 11:18:46,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:46,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:46,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:46,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:46,476 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 11:18:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:48,168 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 11:18:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:48,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 11:18:48,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:48,176 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 11:18:48,176 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 11:18:48,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:48,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 11:18:48,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 11:18:48,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 11:18:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 11:18:48,244 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 146 [2020-09-25 11:18:48,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:48,247 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 11:18:48,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:48,247 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 11:18:48,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 11:18:48,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:48,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:48,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:48,255 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:48,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:48,255 INFO L82 PathProgramCache]: Analyzing trace with hash 196926794, now seen corresponding path program 1 times [2020-09-25 11:18:48,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:48,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791775651] [2020-09-25 11:18:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:48,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:51,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 11:18:51,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:18:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3511 [2020-09-25 11:18:51,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:51,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:18:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 11:18:51,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:51,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:51,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:51,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:51,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:18:51,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:51,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:18:51,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:52,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:52,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:52,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:52,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:18:52,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:52,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 11:18:52,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:52,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:18:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:18:52,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:52,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791775651] [2020-09-25 11:18:52,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:52,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:18:52,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361973367] [2020-09-25 11:18:52,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:18:52,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:52,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:18:52,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:18:52,385 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 12 states. [2020-09-25 11:18:56,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:56,552 INFO L93 Difference]: Finished difference Result 3115 states and 3932 transitions. [2020-09-25 11:18:56,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 11:18:56,553 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-09-25 11:18:56,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:56,573 INFO L225 Difference]: With dead ends: 3115 [2020-09-25 11:18:56,574 INFO L226 Difference]: Without dead ends: 2238 [2020-09-25 11:18:56,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:18:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2020-09-25 11:18:56,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 1707. [2020-09-25 11:18:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2020-09-25 11:18:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2136 transitions. [2020-09-25 11:18:56,714 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2136 transitions. Word has length 156 [2020-09-25 11:18:56,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:56,719 INFO L479 AbstractCegarLoop]: Abstraction has 1707 states and 2136 transitions. [2020-09-25 11:18:56,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:18:56,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2136 transitions. [2020-09-25 11:18:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 11:18:56,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:56,729 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, 2, 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] [2020-09-25 11:18:56,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:56,729 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:56,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:56,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1077403518, now seen corresponding path program 1 times [2020-09-25 11:18:56,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:56,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283646209] [2020-09-25 11:18:56,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:56,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:57,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:58,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:58,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:01,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 11:19:01,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4427 [2020-09-25 11:19:01,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:01,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:19:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-09-25 11:19:01,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:01,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:01,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:01,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:01,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:01,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:19:01,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:01,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:01,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:01,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:01,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:01,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:01,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:01,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:01,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:01,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 11:19:01,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:01,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 11:19:01,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:01,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:01,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:01,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:19:01,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:01,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 11:19:01,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:01,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:19:01,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 106 proven. 61 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:19:01,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283646209] [2020-09-25 11:19:01,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:01,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:19:01,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540553069] [2020-09-25 11:19:01,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:19:01,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:01,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:19:01,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:19:01,869 INFO L87 Difference]: Start difference. First operand 1707 states and 2136 transitions. Second operand 9 states. [2020-09-25 11:19:06,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:06,304 INFO L93 Difference]: Finished difference Result 5224 states and 6850 transitions. [2020-09-25 11:19:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:19:06,305 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 226 [2020-09-25 11:19:06,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:06,327 INFO L225 Difference]: With dead ends: 5224 [2020-09-25 11:19:06,328 INFO L226 Difference]: Without dead ends: 3532 [2020-09-25 11:19:06,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:19:06,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2020-09-25 11:19:06,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 3426. [2020-09-25 11:19:06,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3426 states. [2020-09-25 11:19:06,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4483 transitions. [2020-09-25 11:19:06,461 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4483 transitions. Word has length 226 [2020-09-25 11:19:06,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:06,462 INFO L479 AbstractCegarLoop]: Abstraction has 3426 states and 4483 transitions. [2020-09-25 11:19:06,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:19:06,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4483 transitions. [2020-09-25 11:19:06,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-25 11:19:06,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:06,470 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, 2, 2, 2, 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] [2020-09-25 11:19:06,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:06,470 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:06,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:06,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1634636591, now seen corresponding path program 1 times [2020-09-25 11:19:06,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:06,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324292947] [2020-09-25 11:19:06,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:06,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:06,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:08,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-09-25 11:19:08,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:19:08,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1538 [2020-09-25 11:19:08,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:08,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-09-25 11:19:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 11:19:08,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:08,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:08,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:08,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:08,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:08,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:19:08,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:08,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:08,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:19:08,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:08,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:19:08,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:08,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:08,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 11:19:08,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:08,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 11:19:08,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:08,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:08,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:08,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 11:19:08,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:08,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 11:19:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:08,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:08,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:19:08,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 11:19:08,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:08,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 11:19:08,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:08,637 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-25 11:19:08,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324292947] [2020-09-25 11:19:08,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:08,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:19:08,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165064025] [2020-09-25 11:19:08,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:19:08,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:08,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:19:08,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:08,640 INFO L87 Difference]: Start difference. First operand 3426 states and 4483 transitions. Second operand 5 states. [2020-09-25 11:19:10,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:10,718 INFO L93 Difference]: Finished difference Result 8397 states and 11497 transitions. [2020-09-25 11:19:10,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:19:10,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2020-09-25 11:19:10,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:10,747 INFO L225 Difference]: With dead ends: 8397 [2020-09-25 11:19:10,748 INFO L226 Difference]: Without dead ends: 5136 [2020-09-25 11:19:10,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:19:10,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5136 states. [2020-09-25 11:19:10,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5136 to 5102. [2020-09-25 11:19:10,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5102 states. [2020-09-25 11:19:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 6612 transitions. [2020-09-25 11:19:10,902 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 6612 transitions. Word has length 271 [2020-09-25 11:19:10,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:10,902 INFO L479 AbstractCegarLoop]: Abstraction has 5102 states and 6612 transitions. [2020-09-25 11:19:10,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:19:10,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 6612 transitions. [2020-09-25 11:19:10,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 11:19:10,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:10,910 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:10,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:19:10,911 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:10,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:10,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1197577330, now seen corresponding path program 1 times [2020-09-25 11:19:10,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:10,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249602860] [2020-09-25 11:19:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:11,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:11,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:11,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:15,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-09-25 11:19:15,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:19:15,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 11:19:15,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:15,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:15,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:15,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:19:15,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-25 11:19:15,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:16,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:16,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:16,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:16,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:16,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:19:16,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:16,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:16,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:16,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:16,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:16,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:16,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:16,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:16,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:16,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:16,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:16,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:16,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 11:19:16,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:16,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:19:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:16,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:16,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:17,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 11:19:17,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:17,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-09-25 11:19:17,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:17,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:17,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:17,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:17,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 11:19:17,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 103 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 11:19:17,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249602860] [2020-09-25 11:19:17,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:17,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:19:17,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104436014] [2020-09-25 11:19:17,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:19:17,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:17,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:19:17,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:19:17,360 INFO L87 Difference]: Start difference. First operand 5102 states and 6612 transitions. Second operand 10 states. [2020-09-25 11:19:21,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:21,273 INFO L93 Difference]: Finished difference Result 11007 states and 14546 transitions. [2020-09-25 11:19:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:19:21,274 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 275 [2020-09-25 11:19:21,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:21,305 INFO L225 Difference]: With dead ends: 11007 [2020-09-25 11:19:21,305 INFO L226 Difference]: Without dead ends: 6046 [2020-09-25 11:19:21,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:19:21,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2020-09-25 11:19:21,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 5859. [2020-09-25 11:19:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5859 states. [2020-09-25 11:19:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 7537 transitions. [2020-09-25 11:19:21,477 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 7537 transitions. Word has length 275 [2020-09-25 11:19:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:21,478 INFO L479 AbstractCegarLoop]: Abstraction has 5859 states and 7537 transitions. [2020-09-25 11:19:21,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:19:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 7537 transitions. [2020-09-25 11:19:21,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-09-25 11:19:21,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:21,494 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:21,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:19:21,494 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:21,495 INFO L82 PathProgramCache]: Analyzing trace with hash -488537973, now seen corresponding path program 1 times [2020-09-25 11:19:21,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:21,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16863683] [2020-09-25 11:19:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking...