/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=0.5 --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/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:36:31,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:31,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:32,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:32,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:32,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:32,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:32,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:32,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:32,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:32,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:32,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:32,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:32,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:32,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:32,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:32,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:32,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:32,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:32,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:32,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:32,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:32,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:32,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:32,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:32,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:32,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:32,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:32,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:32,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:32,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:32,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:32,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:32,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:32,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:32,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:32,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:32,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:32,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:32,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:32,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:32,091 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 14:36:32,116 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:32,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:32,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:32,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:32,118 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:32,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:32,119 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:32,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:32,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:32,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:32,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:32,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:32,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:32,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:32,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:32,121 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:32,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:32,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:32,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:32,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:32,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:32,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:32,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:32,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:32,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:32,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:32,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:32,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:32,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:32,124 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:36:32,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:32,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:32,628 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:32,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:32,630 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:32,631 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 14:36:32,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46303fd64/bd546a9106e647f39cff5f82a8c6341b/FLAG60909c0ed [2020-09-25 14:36:33,354 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:36:33,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 14:36:33,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46303fd64/bd546a9106e647f39cff5f82a8c6341b/FLAG60909c0ed [2020-09-25 14:36:33,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46303fd64/bd546a9106e647f39cff5f82a8c6341b [2020-09-25 14:36:33,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:36:33,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:36:33,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:33,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:36:33,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:36:33,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:33" (1/1) ... [2020-09-25 14:36:33,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aaec46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:33, skipping insertion in model container [2020-09-25 14:36:33,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:33" (1/1) ... [2020-09-25 14:36:33,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:36:33,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:36:34,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:34,189 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:36:34,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:34,449 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:36:34,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:34 WrapperNode [2020-09-25 14:36:34,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:34,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:36:34,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:36:34,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:36:34,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:34" (1/1) ... [2020-09-25 14:36:34,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:34" (1/1) ... [2020-09-25 14:36:34,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:34" (1/1) ... [2020-09-25 14:36:34,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:34" (1/1) ... [2020-09-25 14:36:34,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:34" (1/1) ... [2020-09-25 14:36:34,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:34" (1/1) ... [2020-09-25 14:36:34,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:34" (1/1) ... [2020-09-25 14:36:34,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:36:34,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:36:34,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:36:34,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:36:34,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:34" (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 14:36:34,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:36:34,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:36:34,659 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:36:34,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:36:34,659 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:36:34,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:36:34,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:36:34,660 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:36:34,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:36:34,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:36:34,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:36:35,937 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:36:35,938 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:36:35,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:35 BoogieIcfgContainer [2020-09-25 14:36:35,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:36:35,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:36:35,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:36:35,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:36:35,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:36:33" (1/3) ... [2020-09-25 14:36:35,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdda5d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:35, skipping insertion in model container [2020-09-25 14:36:35,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:34" (2/3) ... [2020-09-25 14:36:35,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdda5d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:35, skipping insertion in model container [2020-09-25 14:36:35,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:35" (3/3) ... [2020-09-25 14:36:35,967 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-09-25 14:36:35,978 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:36:35,994 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:36:36,016 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:36:36,062 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:36:36,062 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:36:36,063 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:36:36,063 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:36:36,063 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:36:36,063 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:36:36,063 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:36:36,063 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:36:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:36:36,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 14:36:36,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:36,140 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 14:36:36,140 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:36,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:36,149 INFO L82 PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times [2020-09-25 14:36:36,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:36,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91010985] [2020-09-25 14:36:36,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:36,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:36,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:37,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:37,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:37,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:37,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:39,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:39,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:41,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:41,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:41,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 14:36:41,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:36:41,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-09-25 14:36:41,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:41,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:41,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:41,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:36:41,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 14:36:41,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:36:41,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:41,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:41,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:41,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:41,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:41,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 14:36:41,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:41,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:41,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:41,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:41,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:36:41,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:41,925 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 14:36:41,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91010985] [2020-09-25 14:36:41,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:41,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:36:41,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671167503] [2020-09-25 14:36:41,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:36:41,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:41,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:36:41,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:36:41,964 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 14:36:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:44,038 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 14:36:44,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:36:44,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 14:36:44,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:44,066 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 14:36:44,066 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 14:36:44,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 14:36:44,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 14:36:44,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 14:36:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:36:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 14:36:44,178 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 141 [2020-09-25 14:36:44,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:44,179 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 14:36:44,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:36:44,180 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 14:36:44,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 14:36:44,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:44,186 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-09-25 14:36:44,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:36:44,186 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:44,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:44,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1608331772, now seen corresponding path program 1 times [2020-09-25 14:36:44,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:44,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109590115] [2020-09-25 14:36:44,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:44,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:44,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:45,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:45,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:46,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:47,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:47,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:49,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 14:36:49,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:36:49,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:36:49,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:49,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:36:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 14:36:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 14:36:49,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:36:49,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:49,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:49,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:49,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:49,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:36:49,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:49,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:49,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:49,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:49,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:49,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:49,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:36:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:49,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:36:49,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:49,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 14:36:49,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:49,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:36:49,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:49,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109590115] [2020-09-25 14:36:49,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:49,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:36:49,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969842635] [2020-09-25 14:36:49,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:36:49,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:49,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:36:49,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:36:49,867 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 9 states. [2020-09-25 14:36:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:54,072 INFO L93 Difference]: Finished difference Result 2047 states and 2738 transitions. [2020-09-25 14:36:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:36:54,072 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 162 [2020-09-25 14:36:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:54,080 INFO L225 Difference]: With dead ends: 2047 [2020-09-25 14:36:54,080 INFO L226 Difference]: Without dead ends: 1030 [2020-09-25 14:36:54,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:36:54,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-09-25 14:36:54,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1003. [2020-09-25 14:36:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-09-25 14:36:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1152 transitions. [2020-09-25 14:36:54,132 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1152 transitions. Word has length 162 [2020-09-25 14:36:54,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:54,133 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1152 transitions. [2020-09-25 14:36:54,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:36:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1152 transitions. [2020-09-25 14:36:54,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 14:36:54,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:54,137 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-09-25 14:36:54,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:36:54,137 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:54,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:54,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1956295493, now seen corresponding path program 1 times [2020-09-25 14:36:54,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:54,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086983888] [2020-09-25 14:36:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:54,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:54,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:54,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:54,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:54,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:54,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:55,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:55,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:58,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:59,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:59,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:59,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 14:36:59,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 14:36:59,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 14:36:59,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:59,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:59,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:36:59,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:36:59,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 14:36:59,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:59,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:59,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:59,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:59,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:59,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:36:59,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:59,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:59,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:59,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:59,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:59,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:36:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:59,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:59,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:36:59,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:36:59,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:59,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:36:59,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:59,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086983888] [2020-09-25 14:36:59,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:59,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:36:59,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359041402] [2020-09-25 14:36:59,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:36:59,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:59,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:36:59,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:36:59,458 INFO L87 Difference]: Start difference. First operand 1003 states and 1152 transitions. Second operand 5 states. [2020-09-25 14:37:01,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:01,190 INFO L93 Difference]: Finished difference Result 2685 states and 3155 transitions. [2020-09-25 14:37:01,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:01,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 14:37:01,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:01,202 INFO L225 Difference]: With dead ends: 2685 [2020-09-25 14:37:01,202 INFO L226 Difference]: Without dead ends: 1706 [2020-09-25 14:37:01,206 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 14:37:01,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-09-25 14:37:01,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1636. [2020-09-25 14:37:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2020-09-25 14:37:01,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1898 transitions. [2020-09-25 14:37:01,284 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1898 transitions. Word has length 166 [2020-09-25 14:37:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:01,286 INFO L479 AbstractCegarLoop]: Abstraction has 1636 states and 1898 transitions. [2020-09-25 14:37:01,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1898 transitions. [2020-09-25 14:37:01,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 14:37:01,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:01,292 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, 1, 1] [2020-09-25 14:37:01,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:37:01,292 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:01,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:01,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1385463445, now seen corresponding path program 1 times [2020-09-25 14:37:01,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:01,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726750016] [2020-09-25 14:37:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:01,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:05,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:05,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 14:37:06,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:37:06,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 14:37:06,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 14:37:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 14:37:06,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:06,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:06,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:06,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:06,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:37:06,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:06,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:06,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:37:06,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:37:06,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:37:06,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:06,602 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 14:37:06,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726750016] [2020-09-25 14:37:06,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:06,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:06,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737911052] [2020-09-25 14:37:06,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:06,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:06,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:06,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:06,604 INFO L87 Difference]: Start difference. First operand 1636 states and 1898 transitions. Second operand 5 states. [2020-09-25 14:37:08,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:08,340 INFO L93 Difference]: Finished difference Result 3930 states and 4701 transitions. [2020-09-25 14:37:08,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:08,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 14:37:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:08,353 INFO L225 Difference]: With dead ends: 3930 [2020-09-25 14:37:08,353 INFO L226 Difference]: Without dead ends: 2318 [2020-09-25 14:37:08,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 14:37:08,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2020-09-25 14:37:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1924. [2020-09-25 14:37:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1924 states. [2020-09-25 14:37:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2266 transitions. [2020-09-25 14:37:08,422 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2266 transitions. Word has length 167 [2020-09-25 14:37:08,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:08,422 INFO L479 AbstractCegarLoop]: Abstraction has 1924 states and 2266 transitions. [2020-09-25 14:37:08,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2266 transitions. [2020-09-25 14:37:08,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 14:37:08,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:08,430 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:08,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:37:08,430 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:08,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:08,431 INFO L82 PathProgramCache]: Analyzing trace with hash -227878836, now seen corresponding path program 1 times [2020-09-25 14:37:08,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:08,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044905911] [2020-09-25 14:37:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:08,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:13,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:13,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 14:37:13,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:37:13,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 14:37:13,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:13,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:37:13,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 14:37:13,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 14:37:13,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:13,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:13,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:13,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:13,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:13,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:13,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:37:13,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:13,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:13,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:13,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:13,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:13,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:37:13,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:13,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:37:13,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:13,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:13,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:13,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 14:37:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:13,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:13,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:13,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:37:13,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:13,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 14:37:13,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:13,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:37:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:37:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 14:37:14,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044905911] [2020-09-25 14:37:14,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:14,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:37:14,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503050921] [2020-09-25 14:37:14,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:37:14,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:14,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:37:14,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:37:14,105 INFO L87 Difference]: Start difference. First operand 1924 states and 2266 transitions. Second operand 10 states. [2020-09-25 14:37:17,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:17,494 INFO L93 Difference]: Finished difference Result 4527 states and 5543 transitions. [2020-09-25 14:37:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:37:17,495 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 206 [2020-09-25 14:37:17,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:17,507 INFO L225 Difference]: With dead ends: 4527 [2020-09-25 14:37:17,508 INFO L226 Difference]: Without dead ends: 2391 [2020-09-25 14:37:17,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:37:17,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2020-09-25 14:37:17,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2220. [2020-09-25 14:37:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2220 states. [2020-09-25 14:37:17,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2617 transitions. [2020-09-25 14:37:17,576 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2617 transitions. Word has length 206 [2020-09-25 14:37:17,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:17,577 INFO L479 AbstractCegarLoop]: Abstraction has 2220 states and 2617 transitions. [2020-09-25 14:37:17,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:37:17,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2617 transitions. [2020-09-25 14:37:17,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 14:37:17,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:17,585 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:17,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:37:17,585 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:17,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:17,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1345216993, now seen corresponding path program 1 times [2020-09-25 14:37:17,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:17,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231614358] [2020-09-25 14:37:17,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:17,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:17,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:17,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:18,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:20,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:20,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:21,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:22,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:22,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 14:37:22,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:37:22,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 14:37:22,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:22,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:22,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:22,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 14:37:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 14:37:22,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:22,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:22,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:22,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:22,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:22,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:37:22,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:22,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:22,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:22,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:22,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:22,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:37:22,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:22,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:37:22,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:22,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:22,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:22,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:37:22,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:22,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 14:37:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:22,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:22,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:23,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:37:23,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:37:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 14:37:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:23,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:37:23,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 14:37:23,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231614358] [2020-09-25 14:37:23,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:23,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:23,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748886847] [2020-09-25 14:37:23,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:23,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:23,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:23,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:23,076 INFO L87 Difference]: Start difference. First operand 2220 states and 2617 transitions. Second operand 5 states.