/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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:36:48,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:48,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:48,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:48,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:48,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:48,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:48,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:48,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:48,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:48,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:48,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:48,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:48,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:48,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:48,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:48,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:48,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:48,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:48,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:48,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:48,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:48,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:48,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:48,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:48,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:48,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:48,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:48,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:48,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:48,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:48,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:48,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:48,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:48,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:48,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:48,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:48,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:48,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:48,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:48,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:48,462 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 14:36:48,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:48,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:48,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:48,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:48,502 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:48,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:48,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:48,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:48,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:48,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:48,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:48,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:48,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:48,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:48,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:48,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:48,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:48,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:48,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:48,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:48,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:48,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:48,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:48,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:48,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:48,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:48,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:48,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:48,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:48,508 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 14:36:49,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:49,068 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:49,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:49,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:49,076 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:49,077 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-25 14:36:49,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4270d791c/5ab63e5bbad84ca1b5d9c1e2f305e060/FLAG6a6a07283 [2020-09-25 14:36:49,823 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:36:49,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-25 14:36:49,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4270d791c/5ab63e5bbad84ca1b5d9c1e2f305e060/FLAG6a6a07283 [2020-09-25 14:36:50,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4270d791c/5ab63e5bbad84ca1b5d9c1e2f305e060 [2020-09-25 14:36:50,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:36:50,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:36:50,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:50,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:36:50,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:36:50,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3c9999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50, skipping insertion in model container [2020-09-25 14:36:50,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:36:50,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:36:50,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:50,736 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:36:50,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:50,970 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:36:50,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50 WrapperNode [2020-09-25 14:36:50,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:50,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:36:50,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:36:50,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:36:50,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:51,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:51,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:51,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:51,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:51,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:51,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:36:51,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:36:51,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:36:51,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:36:51,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (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 14:36:51,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:36:51,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:36:51,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:36:51,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:36:51,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:36:51,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:36:51,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:36:51,170 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:36:51,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:36:51,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:36:51,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:36:52,548 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:36:52,548 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:36:52,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:52 BoogieIcfgContainer [2020-09-25 14:36:52,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:36:52,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:36:52,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:36:52,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:36:52,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:36:50" (1/3) ... [2020-09-25 14:36:52,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32aae5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:52, skipping insertion in model container [2020-09-25 14:36:52,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (2/3) ... [2020-09-25 14:36:52,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32aae5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:52, skipping insertion in model container [2020-09-25 14:36:52,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:52" (3/3) ... [2020-09-25 14:36:52,578 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label22.c [2020-09-25 14:36:52,590 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:36:52,605 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:36:52,629 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:36:52,673 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:36:52,673 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:36:52,673 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:36:52,673 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:36:52,673 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:36:52,674 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:36:52,674 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:36:52,674 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:36:52,707 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:36:52,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 14:36:52,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:52,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:52,737 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:52,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:52,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1844135333, now seen corresponding path program 1 times [2020-09-25 14:36:52,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:52,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261755840] [2020-09-25 14:36:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:53,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:54,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:55,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:58,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:58,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 14:36:58,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:36:58,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:36:58,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:58,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:36:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 14:36:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:36:58,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:58,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:58,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:58,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:58,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 14:36:58,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:58,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:58,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:58,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:58,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:36:58,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:58,432 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 14:36:58,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261755840] [2020-09-25 14:36:58,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:58,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:36:58,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32928052] [2020-09-25 14:36:58,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:36:58,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:58,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:36:58,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:36:58,477 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:37:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:01,041 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 14:37:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:01,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-25 14:37:01,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:01,084 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 14:37:01,084 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 14:37:01,096 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 14:37:01,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 14:37:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 14:37:01,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 14:37:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 14:37:01,207 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 155 [2020-09-25 14:37:01,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:01,208 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 14:37:01,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:37:01,209 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 14:37:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 14:37:01,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:01,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:01,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:01,228 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:01,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:01,228 INFO L82 PathProgramCache]: Analyzing trace with hash 623276724, now seen corresponding path program 1 times [2020-09-25 14:37:01,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:01,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579617450] [2020-09-25 14:37:01,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:01,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:05,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 14:37:06,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:37:06,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 14:37:06,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:37:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 14:37:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 14:37:06,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:06,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:06,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:06,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:06,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:37:06,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:06,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:06,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:06,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:06,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:06,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 14:37:06,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:37:06,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:07,277 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 14:37:07,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579617450] [2020-09-25 14:37:07,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:07,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:37:07,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573199960] [2020-09-25 14:37:07,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:37:07,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:07,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:37:07,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:37:07,282 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 9 states. [2020-09-25 14:37:08,129 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-09-25 14:37:12,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:12,466 INFO L93 Difference]: Finished difference Result 2178 states and 2848 transitions. [2020-09-25 14:37:12,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:37:12,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-09-25 14:37:12,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:12,482 INFO L225 Difference]: With dead ends: 2178 [2020-09-25 14:37:12,483 INFO L226 Difference]: Without dead ends: 1100 [2020-09-25 14:37:12,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:37:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-09-25 14:37:12,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1064. [2020-09-25 14:37:12,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-09-25 14:37:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1199 transitions. [2020-09-25 14:37:12,561 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1199 transitions. Word has length 176 [2020-09-25 14:37:12,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:12,561 INFO L479 AbstractCegarLoop]: Abstraction has 1064 states and 1199 transitions. [2020-09-25 14:37:12,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:37:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1199 transitions. [2020-09-25 14:37:12,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 14:37:12,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:12,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:12,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:37:12,571 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:12,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:12,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1665875853, now seen corresponding path program 1 times [2020-09-25 14:37:12,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:12,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91489797] [2020-09-25 14:37:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:12,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:13,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:17,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:17,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 14:37:17,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:37:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 14:37:17,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:17,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 14:37:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 14:37:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:17,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:17,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:17,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:17,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:17,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:17,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:37:17,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:17,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:17,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:17,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:17,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:17,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:17,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:37:17,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:37:17,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:17,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:37:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:17,923 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 14:37:17,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91489797] [2020-09-25 14:37:17,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:17,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:17,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406608807] [2020-09-25 14:37:17,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:17,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:17,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:17,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:17,926 INFO L87 Difference]: Start difference. First operand 1064 states and 1199 transitions. Second operand 5 states. [2020-09-25 14:37:20,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:20,068 INFO L93 Difference]: Finished difference Result 2783 states and 3224 transitions. [2020-09-25 14:37:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:20,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 14:37:20,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:20,078 INFO L225 Difference]: With dead ends: 2783 [2020-09-25 14:37:20,078 INFO L226 Difference]: Without dead ends: 1586 [2020-09-25 14:37:20,083 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 14:37:20,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2020-09-25 14:37:20,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1479. [2020-09-25 14:37:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-09-25 14:37:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1689 transitions. [2020-09-25 14:37:20,168 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1689 transitions. Word has length 181 [2020-09-25 14:37:20,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:20,170 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 1689 transitions. [2020-09-25 14:37:20,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:20,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1689 transitions. [2020-09-25 14:37:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 14:37:20,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:20,176 INFO L422 BasicCegarLoop]: trace histogram [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, 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 14:37:20,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:37:20,177 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:20,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:20,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1362293717, now seen corresponding path program 1 times [2020-09-25 14:37:20,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:20,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290160684] [2020-09-25 14:37:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:20,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:20,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:20,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:20,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:23,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:23,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:23,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:23,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:24,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:25,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:25,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 14:37:25,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 14:37:25,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 14:37:25,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:25,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:25,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:25,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 14:37:25,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 14:37:25,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:25,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:25,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:25,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:25,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:25,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:25,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:37:25,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:25,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:25,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:25,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:25,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:25,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:37:25,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:25,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:37:25,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:25,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:25,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:25,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:25,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:37:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:25,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290160684] [2020-09-25 14:37:25,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:25,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:25,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265429060] [2020-09-25 14:37:25,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:25,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:25,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:25,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:25,502 INFO L87 Difference]: Start difference. First operand 1479 states and 1689 transitions. Second operand 5 states. [2020-09-25 14:37:27,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:27,115 INFO L93 Difference]: Finished difference Result 3331 states and 3892 transitions. [2020-09-25 14:37:27,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:27,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-09-25 14:37:27,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:27,128 INFO L225 Difference]: With dead ends: 3331 [2020-09-25 14:37:27,129 INFO L226 Difference]: Without dead ends: 1876 [2020-09-25 14:37:27,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:27,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2020-09-25 14:37:27,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1765. [2020-09-25 14:37:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1765 states. [2020-09-25 14:37:27,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2087 transitions. [2020-09-25 14:37:27,210 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2087 transitions. Word has length 183 [2020-09-25 14:37:27,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:27,211 INFO L479 AbstractCegarLoop]: Abstraction has 1765 states and 2087 transitions. [2020-09-25 14:37:27,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2087 transitions. [2020-09-25 14:37:27,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 14:37:27,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:27,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:27,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:37:27,219 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:27,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:27,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1105301294, now seen corresponding path program 1 times [2020-09-25 14:37:27,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:27,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420888318] [2020-09-25 14:37:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:27,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:28,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:29,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:32,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 14:37:32,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:37:32,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-09-25 14:37:32,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:32,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:32,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:37:32,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 14:37:32,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 14:37:32,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:32,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:32,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:32,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:32,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:37:32,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:32,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:32,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:32,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:32,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:32,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:37:32,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:32,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 14:37:32,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:32,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:37:32,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:32,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 14:37:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:32,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:32,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:37:32,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:37:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 14:37:32,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:32,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:37:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:37:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:37:33,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420888318] [2020-09-25 14:37:33,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:33,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:37:33,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506608061] [2020-09-25 14:37:33,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:37:33,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:33,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:37:33,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:37:33,205 INFO L87 Difference]: Start difference. First operand 1765 states and 2087 transitions. Second operand 10 states.