/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=LOWLEXORDER --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/Problem02_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:42:49,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:42:49,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:42:49,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:42:49,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:42:49,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:42:49,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:42:49,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:42:49,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:42:49,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:42:49,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:42:49,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:42:49,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:42:49,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:42:49,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:42:49,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:42:49,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:42:49,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:42:49,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:42:49,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:42:49,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:42:49,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:42:49,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:42:49,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:42:49,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:42:49,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:42:49,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:42:49,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:42:49,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:42:49,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:42:49,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:42:49,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:42:49,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:42:49,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:42:49,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:42:49,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:42:49,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:42:49,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:42:49,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:42:49,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:42:49,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:42:49,229 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 [2020-09-24 21:42:49,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:42:49,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:42:49,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:42:49,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:42:49,276 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:42:49,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:42:49,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:42:49,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:42:49,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:42:49,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:42:49,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:42:49,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:42:49,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:42:49,279 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:42:49,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:42:49,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:42:49,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:42:49,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:42:49,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:42:49,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:42:49,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:42:49,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:42:49,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:42:49,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:42:49,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:42:49,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:42:49,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:42:49,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:42:49,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:42:49,282 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:42:49,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:42:49,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:42:49,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:42:49,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:42:49,755 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:42:49,756 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-24 21:42:49,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84a61252/45f6585baecf40a39dc8a5cc1ab46c8b/FLAG958d225eb [2020-09-24 21:42:50,491 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:42:50,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-24 21:42:50,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84a61252/45f6585baecf40a39dc8a5cc1ab46c8b/FLAG958d225eb [2020-09-24 21:42:50,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84a61252/45f6585baecf40a39dc8a5cc1ab46c8b [2020-09-24 21:42:50,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:42:50,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:42:50,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:50,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:42:50,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:42:50,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:50" (1/1) ... [2020-09-24 21:42:50,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:50, skipping insertion in model container [2020-09-24 21:42:50,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:50" (1/1) ... [2020-09-24 21:42:50,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:42:50,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:42:51,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:51,334 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:42:51,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:51,572 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:42:51,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:51 WrapperNode [2020-09-24 21:42:51,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:51,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:42:51,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:42:51,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:42:51,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:51" (1/1) ... [2020-09-24 21:42:51,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:51" (1/1) ... [2020-09-24 21:42:51,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:51" (1/1) ... [2020-09-24 21:42:51,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:51" (1/1) ... [2020-09-24 21:42:51,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:51" (1/1) ... [2020-09-24 21:42:51,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:51" (1/1) ... [2020-09-24 21:42:51,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:51" (1/1) ... [2020-09-24 21:42:51,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:42:51,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:42:51,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:42:51,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:42:51,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:51" (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 [2020-09-24 21:42:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:42:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:42:51,814 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:42:51,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:42:51,814 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:42:51,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:42:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:42:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:42:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:42:51,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:42:51,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:42:53,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:42:53,452 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:42:53,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:53 BoogieIcfgContainer [2020-09-24 21:42:53,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:42:53,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:42:53,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:42:53,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:42:53,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:42:50" (1/3) ... [2020-09-24 21:42:53,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:53, skipping insertion in model container [2020-09-24 21:42:53,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:51" (2/3) ... [2020-09-24 21:42:53,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:53, skipping insertion in model container [2020-09-24 21:42:53,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:53" (3/3) ... [2020-09-24 21:42:53,473 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label34.c [2020-09-24 21:42:53,484 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:42:53,500 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:42:53,522 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:42:53,569 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:42:53,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:42:53,570 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:42:53,570 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:42:53,570 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:42:53,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:42:53,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:42:53,570 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:42:53,601 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:42:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-24 21:42:53,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:53,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:53,624 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:53,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:53,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1247500167, now seen corresponding path program 1 times [2020-09-24 21:42:53,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:53,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-24 21:42:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:53,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:54,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:54,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:54,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:56,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:56,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:58,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:58,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:58,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 21:42:58,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:42:58,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 21:42:58,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:42:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:42:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:42:58,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:42:59,502 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-09-24 21:42:59,671 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-09-24 21:42:59,995 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29 [2020-09-24 21:43:00,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:43:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:00,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:00,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:00,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:43:00,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:43:00,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 21:43:00,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:43:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:43:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:43:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:43:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:43:00,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-24 21:43:00,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:43:00,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 21:43:00,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978842133] [2020-09-24 21:43:00,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:43:00,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:43:00,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:43:00,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:43:00,466 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 16 states. [2020-09-24 21:43:01,100 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-24 21:43:01,460 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-09-24 21:43:01,777 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 95 [2020-09-24 21:43:02,488 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-09-24 21:43:02,941 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 91 [2020-09-24 21:43:04,071 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 86 [2020-09-24 21:43:04,272 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-09-24 21:43:04,599 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-24 21:43:05,348 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2020-09-24 21:43:05,848 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2020-09-24 21:43:06,089 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-24 21:43:07,069 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-09-24 21:43:07,491 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-09-24 21:43:09,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:43:09,850 INFO L93 Difference]: Finished difference Result 1871 states and 2663 transitions. [2020-09-24 21:43:09,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 21:43:09,853 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 124 [2020-09-24 21:43:09,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:43:09,883 INFO L225 Difference]: With dead ends: 1871 [2020-09-24 21:43:09,884 INFO L226 Difference]: Without dead ends: 1243 [2020-09-24 21:43:09,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 21:43:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-09-24 21:43:10,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1076. [2020-09-24 21:43:10,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-09-24 21:43:10,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1295 transitions. [2020-09-24 21:43:10,039 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1295 transitions. Word has length 124 [2020-09-24 21:43:10,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:43:10,040 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1295 transitions. [2020-09-24 21:43:10,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:43:10,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1295 transitions. [2020-09-24 21:43:10,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-24 21:43:10,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:43:10,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:43:10,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:43:10,061 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:43:10,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:43:10,061 INFO L82 PathProgramCache]: Analyzing trace with hash 2003096754, now seen corresponding path program 1 times [2020-09-24 21:43:10,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:43:10,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417787864] [2020-09-24 21:43:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:43:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:10,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:10,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:10,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:12,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:12,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:13,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:14,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:15,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:15,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 21:43:15,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:43:15,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 21:43:15,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:43:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:43:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 21:43:15,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-24 21:43:15,805 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-09-24 21:43:15,955 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-09-24 21:43:16,123 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-09-24 21:43:16,272 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-09-24 21:43:16,434 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-09-24 21:43:16,604 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2020-09-24 21:43:16,757 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-09-24 21:43:17,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:43:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:17,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:17,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:17,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:43:17,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:43:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 21:43:17,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:43:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:43:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:43:17,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:43:17,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:43:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:17,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:17,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:17,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:43:17,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:43:17,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 21:43:17,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:17,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:43:17,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:43:17,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:43:17,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:43:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:43:17,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417787864] [2020-09-24 21:43:17,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:43:17,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:43:17,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388719474] [2020-09-24 21:43:17,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:43:17,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:43:17,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:43:17,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:43:17,515 INFO L87 Difference]: Start difference. First operand 1076 states and 1295 transitions. Second operand 23 states. [2020-09-24 21:43:18,180 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-09-24 21:43:18,407 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-09-24 21:43:18,784 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-09-24 21:43:19,099 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-09-24 21:43:20,237 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-09-24 21:43:20,756 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2020-09-24 21:43:21,338 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2020-09-24 21:43:21,781 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2020-09-24 21:43:22,143 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-09-24 21:43:22,576 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 84 [2020-09-24 21:43:23,324 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 86 [2020-09-24 21:43:23,577 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-09-24 21:43:23,807 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2020-09-24 21:43:24,030 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-09-24 21:43:24,250 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-09-24 21:43:24,683 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-09-24 21:43:24,993 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2020-09-24 21:43:25,194 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-09-24 21:43:25,512 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2020-09-24 21:43:25,935 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-09-24 21:43:26,881 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-09-24 21:43:27,357 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2020-09-24 21:43:27,564 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-09-24 21:43:27,901 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2020-09-24 21:43:28,320 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2020-09-24 21:43:29,035 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2020-09-24 21:43:29,233 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2020-09-24 21:43:29,784 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 74 [2020-09-24 21:43:32,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:43:32,059 INFO L93 Difference]: Finished difference Result 2543 states and 3118 transitions. [2020-09-24 21:43:32,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-09-24 21:43:32,060 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 141 [2020-09-24 21:43:32,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:43:32,069 INFO L225 Difference]: With dead ends: 2543 [2020-09-24 21:43:32,069 INFO L226 Difference]: Without dead ends: 1547 [2020-09-24 21:43:32,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1010, Invalid=2896, Unknown=0, NotChecked=0, Total=3906 [2020-09-24 21:43:32,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2020-09-24 21:43:32,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1316. [2020-09-24 21:43:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-09-24 21:43:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1601 transitions. [2020-09-24 21:43:32,154 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1601 transitions. Word has length 141 [2020-09-24 21:43:32,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:43:32,155 INFO L479 AbstractCegarLoop]: Abstraction has 1316 states and 1601 transitions. [2020-09-24 21:43:32,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:43:32,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1601 transitions. [2020-09-24 21:43:32,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-24 21:43:32,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:43:32,164 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:43:32,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:43:32,164 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:43:32,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:43:32,165 INFO L82 PathProgramCache]: Analyzing trace with hash -5187749, now seen corresponding path program 1 times [2020-09-24 21:43:32,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:43:32,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412173732] [2020-09-24 21:43:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:43:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:32,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:32,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:32,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:34,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:34,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:35,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:36,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:37,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:37,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:37,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-24 21:43:37,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:43:37,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-09-24 21:43:37,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:37,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:43:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:43:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:43:37,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:43:37,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:43:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:37,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:37,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:43:37,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:43:37,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 21:43:37,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:37,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:43:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:43:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:43:37,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:43:37,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:43:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:37,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:37,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:43:37,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:43:37,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 21:43:37,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:43:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:43:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:43:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:43:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:43:38,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412173732] [2020-09-24 21:43:38,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:43:38,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:43:38,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457244874] [2020-09-24 21:43:38,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:43:38,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:43:38,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:43:38,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:43:38,026 INFO L87 Difference]: Start difference. First operand 1316 states and 1601 transitions. Second operand 19 states. [2020-09-24 21:43:39,131 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-09-24 21:43:39,384 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-09-24 21:43:40,037 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-09-24 21:43:40,267 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-09-24 21:43:41,579 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-09-24 21:43:41,865 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-09-24 21:43:43,134 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-09-24 21:43:43,848 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65