/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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:42:01,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:42:01,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:42:02,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:42:02,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:42:02,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:42:02,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:42:02,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:42:02,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:42:02,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:42:02,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:42:02,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:42:02,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:42:02,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:42:02,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:42:02,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:42:02,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:42:02,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:42:02,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:42:02,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:42:02,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:42:02,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:42:02,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:42:02,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:42:02,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:42:02,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:42:02,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:42:02,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:42:02,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:42:02,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:42:02,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:42:02,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:42:02,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:42:02,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:42:02,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:42:02,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:42:02,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:42:02,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:42:02,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:42:02,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:42:02,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:42:02,108 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 21:42:02,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:42:02,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:42:02,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:42:02,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:42:02,159 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:42:02,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:42:02,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:42:02,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:42:02,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:42:02,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:42:02,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:42:02,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:42:02,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:42:02,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:42:02,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:42:02,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:42:02,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:42:02,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:42:02,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:42:02,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:42:02,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:42:02,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:42:02,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:42:02,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:42:02,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:42:02,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:42:02,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:42:02,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:42:02,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:42:02,166 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 21:42:02,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:42:02,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:42:02,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:42:02,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:42:02,704 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:42:02,706 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label22.c [2020-09-24 21:42:02,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22c502eee/4435a36c22544687b1220b9b7fe5493f/FLAGc459be8cb [2020-09-24 21:42:03,433 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:42:03,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label22.c [2020-09-24 21:42:03,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22c502eee/4435a36c22544687b1220b9b7fe5493f/FLAGc459be8cb [2020-09-24 21:42:03,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22c502eee/4435a36c22544687b1220b9b7fe5493f [2020-09-24 21:42:03,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:42:03,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:42:03,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:03,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:42:03,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:42:03,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:03" (1/1) ... [2020-09-24 21:42:03,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:03, skipping insertion in model container [2020-09-24 21:42:03,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:03" (1/1) ... [2020-09-24 21:42:03,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:42:03,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:42:04,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:04,184 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:42:04,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:04,477 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:42:04,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:04 WrapperNode [2020-09-24 21:42:04,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:04,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:42:04,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:42:04,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:42:04,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:04" (1/1) ... [2020-09-24 21:42:04,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:04" (1/1) ... [2020-09-24 21:42:04,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:04" (1/1) ... [2020-09-24 21:42:04,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:04" (1/1) ... [2020-09-24 21:42:04,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:04" (1/1) ... [2020-09-24 21:42:04,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:04" (1/1) ... [2020-09-24 21:42:04,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:04" (1/1) ... [2020-09-24 21:42:04,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:42:04,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:42:04,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:42:04,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:42:04,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:04" (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 21:42:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:42:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:42:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:42:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:42:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:42:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:42:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:42:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:42:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:42:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:42:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:42:06,131 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:42:06,131 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:42:06,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:06 BoogieIcfgContainer [2020-09-24 21:42:06,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:42:06,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:42:06,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:42:06,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:42:06,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:42:03" (1/3) ... [2020-09-24 21:42:06,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a6de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:06, skipping insertion in model container [2020-09-24 21:42:06,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:04" (2/3) ... [2020-09-24 21:42:06,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a6de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:06, skipping insertion in model container [2020-09-24 21:42:06,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:06" (3/3) ... [2020-09-24 21:42:06,151 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label22.c [2020-09-24 21:42:06,165 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:42:06,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:42:06,202 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:42:06,238 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:42:06,238 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:42:06,238 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:42:06,238 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:42:06,239 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:42:06,239 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:42:06,239 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:42:06,239 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:42:06,273 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:42:06,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 21:42:06,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:06,295 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] [2020-09-24 21:42:06,296 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:06,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:06,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1564262750, now seen corresponding path program 1 times [2020-09-24 21:42:06,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:06,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606475125] [2020-09-24 21:42:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:06,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:07,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:08,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:09,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:11,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:11,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:11,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 21:42:11,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:42:11,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 21:42:11,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:11,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:42:11,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:42:11,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:42:11,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:42:12,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:12,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:12,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:12,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:12,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:12,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 21:42:12,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:42:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:12,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:13,046 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 21:42:13,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606475125] [2020-09-24 21:42:13,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:42:13,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 21:42:13,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801048063] [2020-09-24 21:42:13,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:42:13,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:13,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:42:13,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:42:13,081 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 16 states. [2020-09-24 21:42:13,881 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-09-24 21:42:14,133 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-09-24 21:42:14,675 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-09-24 21:42:15,145 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-09-24 21:42:16,286 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-09-24 21:42:16,495 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-09-24 21:42:16,824 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-09-24 21:42:17,641 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-09-24 21:42:18,141 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-09-24 21:42:18,345 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-24 21:42:19,317 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-09-24 21:42:19,736 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-09-24 21:42:22,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:22,202 INFO L93 Difference]: Finished difference Result 1871 states and 2663 transitions. [2020-09-24 21:42:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 21:42:22,204 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 123 [2020-09-24 21:42:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:22,243 INFO L225 Difference]: With dead ends: 1871 [2020-09-24 21:42:22,244 INFO L226 Difference]: Without dead ends: 1243 [2020-09-24 21:42:22,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 21:42:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-09-24 21:42:22,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1076. [2020-09-24 21:42:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-09-24 21:42:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1295 transitions. [2020-09-24 21:42:22,403 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1295 transitions. Word has length 123 [2020-09-24 21:42:22,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:22,404 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1295 transitions. [2020-09-24 21:42:22,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:42:22,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1295 transitions. [2020-09-24 21:42:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-24 21:42:22,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:22,414 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] [2020-09-24 21:42:22,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:42:22,415 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:22,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:22,415 INFO L82 PathProgramCache]: Analyzing trace with hash 480257865, now seen corresponding path program 1 times [2020-09-24 21:42:22,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:22,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692182524] [2020-09-24 21:42:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:22,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:22,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:22,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:26,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:27,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:27,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 21:42:27,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:42:27,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:42:27,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:27,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:42:27,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:42:27,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 21:42:27,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:28,104 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-09-24 21:42:28,223 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-09-24 21:42:28,479 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2020-09-24 21:42:28,691 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 45 [2020-09-24 21:42:28,925 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2020-09-24 21:42:29,170 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 42 [2020-09-24 21:42:29,440 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 43 [2020-09-24 21:42:29,713 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 43 [2020-09-24 21:42:29,943 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 39 [2020-09-24 21:42:30,145 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 32 [2020-09-24 21:42:30,334 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 29 [2020-09-24 21:42:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:30,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:30,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:30,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:30,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:30,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 21:42:30,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:30,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:30,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:30,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:30,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:42:30,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:30,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 21:42:30,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:30,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:30,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:42:30,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:30,999 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 21:42:31,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692182524] [2020-09-24 21:42:31,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:31,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:42:31,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909035025] [2020-09-24 21:42:31,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:42:31,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:31,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:42:31,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:42:31,006 INFO L87 Difference]: Start difference. First operand 1076 states and 1295 transitions. Second operand 23 states. [2020-09-24 21:42:31,671 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-09-24 21:42:31,893 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2020-09-24 21:42:32,186 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2020-09-24 21:42:32,613 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 105 [2020-09-24 21:42:33,952 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-09-24 21:42:34,507 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 103 [2020-09-24 21:42:35,147 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 103 [2020-09-24 21:42:35,572 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 100 [2020-09-24 21:42:35,939 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2020-09-24 21:42:36,299 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 100 [2020-09-24 21:42:36,996 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 100 [2020-09-24 21:42:37,357 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 97 [2020-09-24 21:42:37,768 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-09-24 21:42:38,240 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2020-09-24 21:42:38,586 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 92 [2020-09-24 21:42:39,014 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 89 [2020-09-24 21:42:39,429 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2020-09-24 21:42:40,390 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2020-09-24 21:42:40,791 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-09-24 21:42:41,261 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2020-09-24 21:42:41,693 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-09-24 21:42:42,309 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2020-09-24 21:42:42,859 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2020-09-24 21:42:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:44,900 INFO L93 Difference]: Finished difference Result 2551 states and 3122 transitions. [2020-09-24 21:42:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-09-24 21:42:44,901 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 140 [2020-09-24 21:42:44,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:44,912 INFO L225 Difference]: With dead ends: 2551 [2020-09-24 21:42:44,912 INFO L226 Difference]: Without dead ends: 1555 [2020-09-24 21:42:44,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=957, Invalid=2349, Unknown=0, NotChecked=0, Total=3306 [2020-09-24 21:42:44,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2020-09-24 21:42:44,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1318. [2020-09-24 21:42:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1318 states. [2020-09-24 21:42:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1602 transitions. [2020-09-24 21:42:44,979 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1602 transitions. Word has length 140 [2020-09-24 21:42:44,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:44,979 INFO L479 AbstractCegarLoop]: Abstraction has 1318 states and 1602 transitions. [2020-09-24 21:42:44,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:42:44,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1602 transitions. [2020-09-24 21:42:44,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-24 21:42:44,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:44,984 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] [2020-09-24 21:42:44,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:42:44,985 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:44,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:44,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1662735488, now seen corresponding path program 1 times [2020-09-24 21:42:44,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:44,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757027880] [2020-09-24 21:42:44,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:45,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:46,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:47,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:47,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:49,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:49,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:50,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:50,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 21:42:50,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:42:50,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 21:42:50,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:50,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:42:50,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:42:50,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:42:50,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:50,733 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 35 [2020-09-24 21:42:50,868 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 34 [2020-09-24 21:42:51,013 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 32 [2020-09-24 21:42:51,156 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 29 [2020-09-24 21:42:51,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:51,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:51,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:51,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:51,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:51,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 21:42:51,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:51,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:51,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:51,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:51,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:51,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:42:51,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 21:42:51,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:42:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:42:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:51,651 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 21:42:51,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757027880] [2020-09-24 21:42:51,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:51,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:42:51,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911090307] [2020-09-24 21:42:51,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:42:51,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:51,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:42:51,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:42:51,654 INFO L87 Difference]: Start difference. First operand 1318 states and 1602 transitions. Second operand 19 states. [2020-09-24 21:42:52,446 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-09-24 21:42:52,702 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-09-24 21:42:53,211 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2020-09-24 21:42:53,510 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 78 [2020-09-24 21:42:54,143 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-09-24 21:42:54,421 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2020-09-24 21:42:54,704 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-09-24 21:42:55,792 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74