/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/Problem10_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:45:43,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:45:43,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:45:43,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:45:43,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:45:43,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:45:43,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:45:43,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:45:43,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:45:43,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:45:43,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:45:43,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:45:43,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:45:43,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:45:43,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:45:43,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:45:43,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:45:43,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:45:43,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:45:43,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:45:43,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:45:43,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:45:43,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:45:43,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:45:43,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:45:43,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:45:43,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:45:43,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:45:43,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:45:43,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:45:43,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:45:43,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:45:43,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:45:43,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:45:43,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:45:43,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:45:43,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:45:43,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:45:43,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:45:43,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:45:43,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:45:43,131 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 21:45:43,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:45:43,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:45:43,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:45:43,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:45:43,182 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:45:43,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:45:43,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:45:43,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:45:43,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:45:43,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:45:43,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:45:43,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:45:43,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:45:43,186 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:45:43,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:45:43,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:45:43,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:45:43,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:45:43,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:45:43,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:45:43,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:45:43,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:43,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:45:43,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:45:43,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:45:43,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:45:43,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:45:43,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:45:43,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:45:43,190 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 21:45:43,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:45:43,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:45:43,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:45:43,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:45:43,669 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:45:43,670 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-24 21:45:43,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80ef66c26/9682a31d7f4a4598b73b0744c2677ddd/FLAG53ee6b230 [2020-09-24 21:45:44,383 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:45:44,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-24 21:45:44,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80ef66c26/9682a31d7f4a4598b73b0744c2677ddd/FLAG53ee6b230 [2020-09-24 21:45:44,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80ef66c26/9682a31d7f4a4598b73b0744c2677ddd [2020-09-24 21:45:44,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:45:44,644 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:45:44,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:44,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:45:44,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:45:44,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:44" (1/1) ... [2020-09-24 21:45:44,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:44, skipping insertion in model container [2020-09-24 21:45:44,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:44" (1/1) ... [2020-09-24 21:45:44,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:45:44,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:45:45,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:45,297 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:45:45,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:45,589 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:45:45,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:45 WrapperNode [2020-09-24 21:45:45,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:45,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:45:45,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:45:45,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:45:45,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:45" (1/1) ... [2020-09-24 21:45:45,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:45" (1/1) ... [2020-09-24 21:45:45,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:45" (1/1) ... [2020-09-24 21:45:45,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:45" (1/1) ... [2020-09-24 21:45:45,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:45" (1/1) ... [2020-09-24 21:45:45,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:45" (1/1) ... [2020-09-24 21:45:45,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:45" (1/1) ... [2020-09-24 21:45:45,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:45:45,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:45:45,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:45:45,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:45:45,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:45" (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 21:45:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:45:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:45:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:45:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:45:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:45:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:45:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:45:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:45:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:45:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:45:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:45:47,334 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:45:47,334 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:45:47,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:47 BoogieIcfgContainer [2020-09-24 21:45:47,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:45:47,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:45:47,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:45:47,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:45:47,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:45:44" (1/3) ... [2020-09-24 21:45:47,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:47, skipping insertion in model container [2020-09-24 21:45:47,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:45" (2/3) ... [2020-09-24 21:45:47,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:47, skipping insertion in model container [2020-09-24 21:45:47,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:47" (3/3) ... [2020-09-24 21:45:47,356 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-09-24 21:45:47,367 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:45:47,379 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:45:47,402 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:45:47,438 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:45:47,439 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:45:47,439 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:45:47,439 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:45:47,439 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:45:47,439 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:45:47,440 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:45:47,440 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:45:47,472 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:45:47,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 21:45:47,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:47,488 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] [2020-09-24 21:45:47,488 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:47,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-09-24 21:45:47,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:47,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-24 21:45:47,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:47,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:48,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:48,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:48,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:48,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-09-24 21:45:48,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:48,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:48,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:48,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:45:48,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:45:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:48,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:48,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:48,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:48,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:48,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:45:48,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:48,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:48,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:48,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:48,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:48,833 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 21:45:48,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-24 21:45:48,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:48,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:45:48,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887438781] [2020-09-24 21:45:48,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:45:48,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:48,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:45:48,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:45:48,876 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:45:50,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:50,838 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-24 21:45:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:45:50,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-24 21:45:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:50,876 INFO L225 Difference]: With dead ends: 1069 [2020-09-24 21:45:50,877 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 21:45:50,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:45:50,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 21:45:51,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-24 21:45:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-24 21:45:51,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-24 21:45:51,017 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 76 [2020-09-24 21:45:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:51,019 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-24 21:45:51,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:45:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-24 21:45:51,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 21:45:51,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:51,038 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:45:51,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:45:51,039 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:51,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:51,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1884656088, now seen corresponding path program 1 times [2020-09-24 21:45:51,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:51,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205681457] [2020-09-24 21:45:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:51,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:53,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 21:45:53,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2384 [2020-09-24 21:45:53,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 21:45:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:53,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:53,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:53,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:53,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:45:53,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:53,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:53,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:53,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:53,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:53,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:53,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:53,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 21:45:53,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:53,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 21:45:53,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:45:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:53,829 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:53,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205681457] [2020-09-24 21:45:53,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:53,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:53,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098426456] [2020-09-24 21:45:53,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:53,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:53,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:53,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:53,834 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-24 21:45:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:56,210 INFO L93 Difference]: Finished difference Result 1503 states and 1930 transitions. [2020-09-24 21:45:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:45:56,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-09-24 21:45:56,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:56,216 INFO L225 Difference]: With dead ends: 1503 [2020-09-24 21:45:56,216 INFO L226 Difference]: Without dead ends: 975 [2020-09-24 21:45:56,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:45:56,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-09-24 21:45:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 892. [2020-09-24 21:45:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-09-24 21:45:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1129 transitions. [2020-09-24 21:45:56,259 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1129 transitions. Word has length 156 [2020-09-24 21:45:56,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:56,260 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1129 transitions. [2020-09-24 21:45:56,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:56,260 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1129 transitions. [2020-09-24 21:45:56,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 21:45:56,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:56,264 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:45:56,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:56,264 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:56,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:56,264 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-09-24 21:45:56,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:56,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700288109] [2020-09-24 21:45:56,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:56,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:56,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:56,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:56,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:59,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:01,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:01,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 21:46:01,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 21:46:01,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:46:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:01,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:46:01,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:01,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:01,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:01,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:01,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:01,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:46:01,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:01,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:46:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:01,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:01,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:01,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:01,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:01,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-24 21:46:01,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:01,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:46:01,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:01,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:01,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 36 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:02,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700288109] [2020-09-24 21:46:02,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:02,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:46:02,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453934988] [2020-09-24 21:46:02,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:46:02,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:02,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:46:02,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:46:02,090 INFO L87 Difference]: Start difference. First operand 892 states and 1129 transitions. Second operand 12 states. [2020-09-24 21:46:05,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:05,156 INFO L93 Difference]: Finished difference Result 2029 states and 2653 transitions. [2020-09-24 21:46:05,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:46:05,157 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 165 [2020-09-24 21:46:05,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:05,174 INFO L225 Difference]: With dead ends: 2029 [2020-09-24 21:46:05,174 INFO L226 Difference]: Without dead ends: 1124 [2020-09-24 21:46:05,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:46:05,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2020-09-24 21:46:05,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1046. [2020-09-24 21:46:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-09-24 21:46:05,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1319 transitions. [2020-09-24 21:46:05,258 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1319 transitions. Word has length 165 [2020-09-24 21:46:05,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:05,258 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1319 transitions. [2020-09-24 21:46:05,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:46:05,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1319 transitions. [2020-09-24 21:46:05,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 21:46:05,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:05,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:05,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:46:05,262 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:05,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:05,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1256012571, now seen corresponding path program 1 times [2020-09-24 21:46:05,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:05,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687655913] [2020-09-24 21:46:05,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:05,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:05,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:05,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:05,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:08,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 21:46:08,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:46:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3334 [2020-09-24 21:46:08,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:08,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:46:08,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:08,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-09-24 21:46:08,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:08,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:08,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:08,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:08,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:08,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:46:08,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:08,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:08,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:08,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 21:46:08,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:08,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 21:46:08,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:08,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:08,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:08,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 21:46:08,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:09,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687655913] [2020-09-24 21:46:09,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:09,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:46:09,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227520816] [2020-09-24 21:46:09,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:46:09,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:09,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:46:09,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:46:09,030 INFO L87 Difference]: Start difference. First operand 1046 states and 1319 transitions. Second operand 8 states. [2020-09-24 21:46:11,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:11,900 INFO L93 Difference]: Finished difference Result 2359 states and 3047 transitions. [2020-09-24 21:46:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:46:11,901 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 167 [2020-09-24 21:46:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:11,913 INFO L225 Difference]: With dead ends: 2359 [2020-09-24 21:46:11,914 INFO L226 Difference]: Without dead ends: 1478 [2020-09-24 21:46:11,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:46:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2020-09-24 21:46:11,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1382. [2020-09-24 21:46:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2020-09-24 21:46:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1709 transitions. [2020-09-24 21:46:11,969 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1709 transitions. Word has length 167 [2020-09-24 21:46:11,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:11,971 INFO L479 AbstractCegarLoop]: Abstraction has 1382 states and 1709 transitions. [2020-09-24 21:46:11,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:46:11,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1709 transitions. [2020-09-24 21:46:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-24 21:46:11,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:11,974 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:46:11,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:46:11,975 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:11,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:11,975 INFO L82 PathProgramCache]: Analyzing trace with hash -446945425, now seen corresponding path program 1 times [2020-09-24 21:46:11,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:11,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673248618] [2020-09-24 21:46:11,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:12,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:12,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:15,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:16,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:17,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:17,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 21:46:17,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:46:17,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 21:46:17,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:17,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:46:17,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:17,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-24 21:46:17,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:17,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:17,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:17,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:17,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:17,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 21:46:17,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:17,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:17,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:17,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:17,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:17,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 21:46:17,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:17,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-09-24 21:46:17,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:17,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:46:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:17,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 21:46:17,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 21:46:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 42 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:18,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673248618] [2020-09-24 21:46:18,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:18,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:46:18,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274555618] [2020-09-24 21:46:18,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:46:18,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:18,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:46:18,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:46:18,177 INFO L87 Difference]: Start difference. First operand 1382 states and 1709 transitions. Second operand 12 states. [2020-09-24 21:46:20,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:20,414 INFO L93 Difference]: Finished difference Result 2356 states and 2999 transitions. [2020-09-24 21:46:20,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:46:20,414 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 184 [2020-09-24 21:46:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:20,423 INFO L225 Difference]: With dead ends: 2356 [2020-09-24 21:46:20,423 INFO L226 Difference]: Without dead ends: 1451 [2020-09-24 21:46:20,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:46:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2020-09-24 21:46:20,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1391. [2020-09-24 21:46:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1391 states. [2020-09-24 21:46:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1717 transitions. [2020-09-24 21:46:20,471 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1717 transitions. Word has length 184 [2020-09-24 21:46:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:20,471 INFO L479 AbstractCegarLoop]: Abstraction has 1391 states and 1717 transitions. [2020-09-24 21:46:20,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:46:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1717 transitions. [2020-09-24 21:46:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 21:46:20,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:20,475 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:46:20,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:20,476 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:20,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:20,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1210846015, now seen corresponding path program 1 times [2020-09-24 21:46:20,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:20,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722556896] [2020-09-24 21:46:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:20,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:20,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:20,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:23,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:23,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:25,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:25,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 21:46:25,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:46:25,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 21:46:25,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:46:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 21:46:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:25,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:25,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:25,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:25,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:25,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:25,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:46:25,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:46:25,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:25,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:25,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:25,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:25,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 21:46:25,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:25,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 21:46:25,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 21:46:25,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:26,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722556896] [2020-09-24 21:46:26,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:26,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:46:26,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261812165] [2020-09-24 21:46:26,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:46:26,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:26,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:46:26,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:26,053 INFO L87 Difference]: Start difference. First operand 1391 states and 1717 transitions. Second operand 7 states. [2020-09-24 21:46:28,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:28,406 INFO L93 Difference]: Finished difference Result 2804 states and 3656 transitions. [2020-09-24 21:46:28,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:46:28,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-09-24 21:46:28,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:28,416 INFO L225 Difference]: With dead ends: 2804 [2020-09-24 21:46:28,416 INFO L226 Difference]: Without dead ends: 1584 [2020-09-24 21:46:28,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:46:28,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2020-09-24 21:46:28,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1532. [2020-09-24 21:46:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1532 states. [2020-09-24 21:46:28,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 1873 transitions. [2020-09-24 21:46:28,465 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 1873 transitions. Word has length 198 [2020-09-24 21:46:28,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:28,466 INFO L479 AbstractCegarLoop]: Abstraction has 1532 states and 1873 transitions. [2020-09-24 21:46:28,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:46:28,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 1873 transitions. [2020-09-24 21:46:28,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-24 21:46:28,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:28,471 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:28,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:46:28,472 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:28,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:28,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1504222835, now seen corresponding path program 1 times [2020-09-24 21:46:28,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:28,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297496020] [2020-09-24 21:46:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:28,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:28,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:29,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking...