/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:30:32,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:30:32,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:30:32,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:30:32,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:30:32,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:30:32,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:30:32,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:30:32,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:30:32,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:30:32,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:30:32,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:30:32,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:30:32,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:30:32,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:30:32,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:30:32,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:30:32,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:30:32,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:30:32,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:30:32,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:30:32,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:30:32,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:30:32,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:30:32,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:30:32,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:30:32,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:30:32,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:30:32,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:30:32,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:30:32,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:30:32,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:30:32,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:30:32,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:30:32,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:30:32,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:30:32,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:30:32,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:30:32,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:30:32,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:30:32,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:30:32,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:30:32,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:30:32,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:30:32,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:30:32,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:30:32,749 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:30:32,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:30:32,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:30:32,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:30:32,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:30:32,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:30:32,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:30:32,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:30:32,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:30:32,750 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:30:32,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:30:32,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:30:32,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:30:32,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:30:32,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:30:32,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:30:32,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:30:32,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:32,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:30:32,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:30:32,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:30:32,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:30:32,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:30:32,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:30:32,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:30:32,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:30:33,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:30:33,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:30:33,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:30:33,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:30:33,292 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:30:33,293 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 13:30:33,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6baa84ee3/80ab99993d014a53a172c38cd16fc1d5/FLAG1d1a78312 [2020-09-25 13:30:34,009 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:30:34,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 13:30:34,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6baa84ee3/80ab99993d014a53a172c38cd16fc1d5/FLAG1d1a78312 [2020-09-25 13:30:34,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6baa84ee3/80ab99993d014a53a172c38cd16fc1d5 [2020-09-25 13:30:34,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:30:34,258 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:30:34,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:34,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:30:34,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:30:34,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:34" (1/1) ... [2020-09-25 13:30:34,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe12ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:34, skipping insertion in model container [2020-09-25 13:30:34,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:34" (1/1) ... [2020-09-25 13:30:34,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:30:34,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:30:34,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:34,921 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:30:35,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:35,043 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:30:35,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:35 WrapperNode [2020-09-25 13:30:35,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:35,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:30:35,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:30:35,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:30:35,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:35" (1/1) ... [2020-09-25 13:30:35,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:35" (1/1) ... [2020-09-25 13:30:35,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:35" (1/1) ... [2020-09-25 13:30:35,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:35" (1/1) ... [2020-09-25 13:30:35,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:35" (1/1) ... [2020-09-25 13:30:35,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:35" (1/1) ... [2020-09-25 13:30:35,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:35" (1/1) ... [2020-09-25 13:30:35,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:30:35,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:30:35,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:30:35,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:30:35,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:30:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:30:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:30:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:30:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:30:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:30:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:30:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:30:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:30:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:30:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:30:36,602 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:30:36,602 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:30:36,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:36 BoogieIcfgContainer [2020-09-25 13:30:36,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:30:36,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:30:36,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:30:36,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:30:36,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:30:34" (1/3) ... [2020-09-25 13:30:36,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:36, skipping insertion in model container [2020-09-25 13:30:36,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:35" (2/3) ... [2020-09-25 13:30:36,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:36, skipping insertion in model container [2020-09-25 13:30:36,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:36" (3/3) ... [2020-09-25 13:30:36,634 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label00.c [2020-09-25 13:30:36,646 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:30:36,663 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:30:36,685 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:30:36,720 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:30:36,720 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:30:36,721 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:30:36,721 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:30:36,721 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:30:36,721 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:30:36,721 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:30:36,721 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:30:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:30:36,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 13:30:36,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:36,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:36,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:36,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:36,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1323495626, now seen corresponding path program 1 times [2020-09-25 13:30:36,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:36,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66102414] [2020-09-25 13:30:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:37,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:37,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:41,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:41,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:42,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 13:30:42,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:30:42,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 13:30:42,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:42,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:42,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:30:42,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:30:42,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 13:30:42,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:30:42,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:42,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:42,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:30:42,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:42,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:30:42,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:42,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:42,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:42,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:42,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:30:42,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:42,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66102414] [2020-09-25 13:30:42,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:30:42,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:30:42,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227285586] [2020-09-25 13:30:42,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:30:42,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:42,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:30:42,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:30:42,414 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:30:44,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:44,676 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 13:30:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:30:44,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-25 13:30:44,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:44,728 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 13:30:44,728 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 13:30:44,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:44,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 13:30:44,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 13:30:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 13:30:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 13:30:44,845 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 141 [2020-09-25 13:30:44,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:44,846 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 13:30:44,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:30:44,847 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 13:30:44,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 13:30:44,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:44,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:44,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:30:44,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:44,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:44,857 INFO L82 PathProgramCache]: Analyzing trace with hash -427811082, now seen corresponding path program 1 times [2020-09-25 13:30:44,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:44,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228498506] [2020-09-25 13:30:44,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:44,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:47,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:47,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:47,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:49,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 13:30:49,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:30:49,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-25 13:30:49,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:49,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:30:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 13:30:49,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:50,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:50,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:50,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:50,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:30:50,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:50,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:30:50,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:50,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:50,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 13:30:50,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:30:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:50,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:50,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:30:50,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:30:50,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:50,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:50,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:30:50,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:50,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228498506] [2020-09-25 13:30:50,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:50,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:50,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011337150] [2020-09-25 13:30:50,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:50,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:50,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:50,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:50,235 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 13:30:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:52,714 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 13:30:52,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:52,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 13:30:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:52,727 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 13:30:52,727 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 13:30:52,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:52,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 13:30:52,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 13:30:52,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 13:30:52,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 13:30:52,808 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 159 [2020-09-25 13:30:52,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:52,809 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 13:30:52,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:52,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 13:30:52,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 13:30:52,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:52,815 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:52,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:30:52,816 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:52,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:52,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1532325973, now seen corresponding path program 1 times [2020-09-25 13:30:52,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:52,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142640915] [2020-09-25 13:30:52,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:52,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:53,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:55,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:57,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:57,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 13:30:57,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:30:57,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:30:57,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:57,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:57,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:57,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:30:57,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:30:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:58,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:58,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:58,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:58,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:30:58,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:58,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:30:58,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:58,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:58,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:58,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:30:58,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:30:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:58,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:58,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:58,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:30:58,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:58,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:30:58,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:58,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:30:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:58,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142640915] [2020-09-25 13:30:58,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:58,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:30:58,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939353689] [2020-09-25 13:30:58,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:30:58,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:58,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:30:58,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:58,195 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 6 states. [2020-09-25 13:31:00,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:00,244 INFO L93 Difference]: Finished difference Result 2711 states and 3513 transitions. [2020-09-25 13:31:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:00,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-25 13:31:00,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:00,256 INFO L225 Difference]: With dead ends: 2711 [2020-09-25 13:31:00,257 INFO L226 Difference]: Without dead ends: 1678 [2020-09-25 13:31:00,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:31:00,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-09-25 13:31:00,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1507. [2020-09-25 13:31:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-09-25 13:31:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1959 transitions. [2020-09-25 13:31:00,321 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1959 transitions. Word has length 165 [2020-09-25 13:31:00,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:00,322 INFO L479 AbstractCegarLoop]: Abstraction has 1507 states and 1959 transitions. [2020-09-25 13:31:00,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:31:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1959 transitions. [2020-09-25 13:31:00,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 13:31:00,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:00,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:00,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:31:00,332 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:00,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:00,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1927343599, now seen corresponding path program 1 times [2020-09-25 13:31:00,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:00,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579846367] [2020-09-25 13:31:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:00,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:00,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:00,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:01,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:03,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:03,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:05,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:05,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 13:31:05,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:31:05,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:31:05,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:05,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 13:31:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 13:31:05,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:31:05,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:05,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:05,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:05,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:05,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:31:05,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:05,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:05,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:05,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:05,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:05,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:31:05,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:05,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 13:31:05,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:05,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:05,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:31:05,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:05,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579846367] [2020-09-25 13:31:05,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:05,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:05,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964704313] [2020-09-25 13:31:05,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:05,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:05,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:05,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:05,674 INFO L87 Difference]: Start difference. First operand 1507 states and 1959 transitions. Second operand 5 states. [2020-09-25 13:31:07,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:07,753 INFO L93 Difference]: Finished difference Result 4182 states and 5661 transitions. [2020-09-25 13:31:07,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:07,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 13:31:07,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:07,773 INFO L225 Difference]: With dead ends: 4182 [2020-09-25 13:31:07,773 INFO L226 Difference]: Without dead ends: 2697 [2020-09-25 13:31:07,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:31:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2697 states. [2020-09-25 13:31:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2697 to 2472. [2020-09-25 13:31:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2472 states. [2020-09-25 13:31:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3139 transitions. [2020-09-25 13:31:07,895 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3139 transitions. Word has length 175 [2020-09-25 13:31:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:07,896 INFO L479 AbstractCegarLoop]: Abstraction has 2472 states and 3139 transitions. [2020-09-25 13:31:07,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3139 transitions. [2020-09-25 13:31:07,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 13:31:07,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:07,910 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, 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] [2020-09-25 13:31:07,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:31:07,910 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:07,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:07,911 INFO L82 PathProgramCache]: Analyzing trace with hash -143149831, now seen corresponding path program 1 times [2020-09-25 13:31:07,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:07,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221230132] [2020-09-25 13:31:07,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:08,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:10,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:12,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:12,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:12,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:12,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 13:31:12,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:31:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:31:12,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:12,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 13:31:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 13:31:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:13,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:13,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:13,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:13,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:13,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:13,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:31:13,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:13,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:13,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:13,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:13,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:31:13,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:13,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:13,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:13,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 13:31:13,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:13,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 13:31:13,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:13,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:13,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 13:31:13,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:31:13,384 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:13,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221230132] [2020-09-25 13:31:13,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:13,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:13,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724280761] [2020-09-25 13:31:13,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:13,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:13,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:13,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:13,387 INFO L87 Difference]: Start difference. First operand 2472 states and 3139 transitions. Second operand 5 states. [2020-09-25 13:31:15,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:15,419 INFO L93 Difference]: Finished difference Result 6328 states and 8351 transitions. [2020-09-25 13:31:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:15,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-09-25 13:31:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:15,441 INFO L225 Difference]: With dead ends: 6328 [2020-09-25 13:31:15,442 INFO L226 Difference]: Without dead ends: 3878 [2020-09-25 13:31:15,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:31:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2020-09-25 13:31:15,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3688. [2020-09-25 13:31:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3688 states. [2020-09-25 13:31:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 4568 transitions. [2020-09-25 13:31:15,565 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 4568 transitions. Word has length 222 [2020-09-25 13:31:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:15,566 INFO L479 AbstractCegarLoop]: Abstraction has 3688 states and 4568 transitions. [2020-09-25 13:31:15,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 4568 transitions. [2020-09-25 13:31:15,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 13:31:15,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:15,583 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:31:15,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:31:15,583 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:15,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:15,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1124802478, now seen corresponding path program 1 times [2020-09-25 13:31:15,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:15,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758979559] [2020-09-25 13:31:15,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:15,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:16,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:17,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:17,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:17,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:20,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:20,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:20,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 13:31:20,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:31:20,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 13:31:20,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:20,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:20,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:31:20,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:31:20,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-09-25 13:31:20,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:20,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:20,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:20,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:20,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:20,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:20,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:31:20,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:20,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:20,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:20,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:20,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:20,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:20,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:20,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:20,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:20,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:31:20,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:20,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:31:20,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:20,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:31:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:20,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 13:31:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:20,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:20,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:21,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:21,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 13:31:21,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:31:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-09-25 13:31:21,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:21,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:31:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 13:31:21,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 101 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:31:21,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758979559] [2020-09-25 13:31:21,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:21,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:31:21,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750248442] [2020-09-25 13:31:21,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:31:21,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:21,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:31:21,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:31:21,640 INFO L87 Difference]: Start difference. First operand 3688 states and 4568 transitions. Second operand 7 states.