/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=0.3 --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/Problem14_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:56,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:56,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:56,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:56,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:56,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:56,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:56,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:56,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:56,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:56,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:56,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:56,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:56,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:56,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:56,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:56,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:56,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:56,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:56,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:56,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:56,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:56,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:56,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:56,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:56,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:56,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:56,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:56,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:56,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:56,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:56,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:56,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:56,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:56,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:56,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:56,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:56,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:56,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:56,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:56,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:56,509 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 12:27:56,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:56,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:56,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:56,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:56,541 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:56,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:56,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:56,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:56,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:56,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:56,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:56,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:56,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:56,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:56,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:56,543 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:56,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:56,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:56,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:56,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:56,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:56,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:56,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:56,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:56,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:56,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:56,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:56,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:56,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:56,546 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:27:56,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:57,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:57,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:57,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:57,013 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:57,014 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 12:27:57,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53862503d/dee1cd72e59c4ec6897baab70f051a38/FLAGdda0ea1da [2020-09-25 12:27:57,714 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:57,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 12:27:57,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53862503d/dee1cd72e59c4ec6897baab70f051a38/FLAGdda0ea1da [2020-09-25 12:27:57,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53862503d/dee1cd72e59c4ec6897baab70f051a38 [2020-09-25 12:27:57,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:57,969 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:57,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:57,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:57,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:57,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:57" (1/1) ... [2020-09-25 12:27:57,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1487e564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:57, skipping insertion in model container [2020-09-25 12:27:57,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:57" (1/1) ... [2020-09-25 12:27:57,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:58,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:58,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:58,806 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:58,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:59,018 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:59,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:59 WrapperNode [2020-09-25 12:27:59,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:59,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:59,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:59,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:59,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:59" (1/1) ... [2020-09-25 12:27:59,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:59" (1/1) ... [2020-09-25 12:27:59,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:59" (1/1) ... [2020-09-25 12:27:59,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:59" (1/1) ... [2020-09-25 12:27:59,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:59" (1/1) ... [2020-09-25 12:27:59,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:59" (1/1) ... [2020-09-25 12:27:59,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:59" (1/1) ... [2020-09-25 12:27:59,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:59,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:59,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:59,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:59,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:59" (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 12:27:59,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:59,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:59,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:59,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:28:00,912 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:28:00,913 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:28:00,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:00 BoogieIcfgContainer [2020-09-25 12:28:00,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:28:00,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:28:00,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:28:00,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:28:00,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:57" (1/3) ... [2020-09-25 12:28:00,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf39fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:00, skipping insertion in model container [2020-09-25 12:28:00,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:59" (2/3) ... [2020-09-25 12:28:00,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf39fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:00, skipping insertion in model container [2020-09-25 12:28:00,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:00" (3/3) ... [2020-09-25 12:28:00,932 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label01.c [2020-09-25 12:28:00,943 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:28:00,954 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:28:00,977 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:28:01,009 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:28:01,010 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:28:01,010 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:28:01,010 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:28:01,010 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:28:01,010 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:28:01,011 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:28:01,011 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:28:01,044 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 12:28:01,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 12:28:01,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:01,057 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] [2020-09-25 12:28:01,057 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:01,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:01,066 INFO L82 PathProgramCache]: Analyzing trace with hash -899775614, now seen corresponding path program 1 times [2020-09-25 12:28:01,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:01,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135388633] [2020-09-25 12:28:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:01,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:01,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:01,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:01,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 12:28:01,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:01,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-09-25 12:28:01,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:01,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:28:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 12:28:01,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:28:02,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:02,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:02,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:02,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:28:02,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:02,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:28:02,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:02,120 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 12:28:02,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135388633] [2020-09-25 12:28:02,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:02,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:28:02,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302026405] [2020-09-25 12:28:02,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:28:02,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:02,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:28:02,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:28:02,159 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 12:28:04,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:04,770 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 12:28:04,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:28:04,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-25 12:28:04,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:04,799 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 12:28:04,799 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 12:28:04,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:28:04,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 12:28:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 12:28:04,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 12:28:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 12:28:04,940 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 73 [2020-09-25 12:28:04,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:04,941 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 12:28:04,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:28:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 12:28:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 12:28:04,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:04,951 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:04,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:28:04,952 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:04,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:04,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1576204144, now seen corresponding path program 1 times [2020-09-25 12:28:04,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:04,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470413228] [2020-09-25 12:28:04,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:05,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:10,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 12:28:10,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:28:10,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 12:28:10,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:10,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:28:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 12:28:10,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:10,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:10,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:10,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:10,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:28:10,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:10,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:10,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:10,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:10,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:10,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:28:10,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-09-25 12:28:10,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:10,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:28:10,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:10,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470413228] [2020-09-25 12:28:10,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:10,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:28:10,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290466734] [2020-09-25 12:28:10,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:28:10,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:10,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:28:10,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:28:10,895 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 9 states. [2020-09-25 12:28:14,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:14,911 INFO L93 Difference]: Finished difference Result 2155 states and 2756 transitions. [2020-09-25 12:28:14,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:14,912 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-09-25 12:28:14,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:14,924 INFO L225 Difference]: With dead ends: 2155 [2020-09-25 12:28:14,924 INFO L226 Difference]: Without dead ends: 1364 [2020-09-25 12:28:14,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:28:14,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2020-09-25 12:28:15,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1283. [2020-09-25 12:28:15,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2020-09-25 12:28:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1518 transitions. [2020-09-25 12:28:15,009 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1518 transitions. Word has length 152 [2020-09-25 12:28:15,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:15,012 INFO L479 AbstractCegarLoop]: Abstraction has 1283 states and 1518 transitions. [2020-09-25 12:28:15,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:28:15,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1518 transitions. [2020-09-25 12:28:15,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 12:28:15,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:15,023 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:15,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:28:15,024 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:15,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:15,025 INFO L82 PathProgramCache]: Analyzing trace with hash 2132195680, now seen corresponding path program 1 times [2020-09-25 12:28:15,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:15,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417727545] [2020-09-25 12:28:15,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:15,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:16,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:16,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:19,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:20,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 12:28:20,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:20,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:28:20,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:20,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:28:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 12:28:20,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:28:20,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:20,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:20,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:20,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:20,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:28:20,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:20,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:20,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:20,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:20,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:28:20,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:28:20,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:20,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:28:20,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:20,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-09-25 12:28:20,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:20,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:28:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:28:20,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:28:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:20,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417727545] [2020-09-25 12:28:20,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:20,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:28:20,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504021074] [2020-09-25 12:28:20,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:28:20,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:20,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:28:20,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:28:20,892 INFO L87 Difference]: Start difference. First operand 1283 states and 1518 transitions. Second operand 11 states. [2020-09-25 12:28:25,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:25,449 INFO L93 Difference]: Finished difference Result 2323 states and 2767 transitions. [2020-09-25 12:28:25,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:28:25,454 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 156 [2020-09-25 12:28:25,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:25,463 INFO L225 Difference]: With dead ends: 2323 [2020-09-25 12:28:25,464 INFO L226 Difference]: Without dead ends: 1447 [2020-09-25 12:28:25,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-09-25 12:28:25,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2020-09-25 12:28:25,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1241. [2020-09-25 12:28:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-09-25 12:28:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1458 transitions. [2020-09-25 12:28:25,504 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1458 transitions. Word has length 156 [2020-09-25 12:28:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:25,505 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 1458 transitions. [2020-09-25 12:28:25,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:28:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1458 transitions. [2020-09-25 12:28:25,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 12:28:25,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:25,507 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:25,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:28:25,508 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:25,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:25,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1211602231, now seen corresponding path program 1 times [2020-09-25 12:28:25,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:25,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295950946] [2020-09-25 12:28:25,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:27,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:27,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 12:28:27,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:28:27,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2049 [2020-09-25 12:28:27,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:27,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:28:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 12:28:27,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:27,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:27,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:27,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:27,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:27,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:27,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:28:27,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:27,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:27,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:27,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:27,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:27,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:27,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 12:28:27,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:27,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 12:28:27,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:27,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 12:28:27,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:28,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295950946] [2020-09-25 12:28:28,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:28,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:28:28,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715625934] [2020-09-25 12:28:28,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:28:28,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:28,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:28:28,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:28:28,171 INFO L87 Difference]: Start difference. First operand 1241 states and 1458 transitions. Second operand 10 states. [2020-09-25 12:28:31,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:31,815 INFO L93 Difference]: Finished difference Result 2318 states and 2738 transitions. [2020-09-25 12:28:31,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:28:31,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-09-25 12:28:31,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:31,822 INFO L225 Difference]: With dead ends: 2318 [2020-09-25 12:28:31,822 INFO L226 Difference]: Without dead ends: 1023 [2020-09-25 12:28:31,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:28:31,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-09-25 12:28:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 999. [2020-09-25 12:28:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-09-25 12:28:31,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1180 transitions. [2020-09-25 12:28:31,849 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1180 transitions. Word has length 166 [2020-09-25 12:28:31,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:31,849 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1180 transitions. [2020-09-25 12:28:31,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:28:31,849 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1180 transitions. [2020-09-25 12:28:31,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-09-25 12:28:31,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:31,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:28:31,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:31,854 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:31,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:31,854 INFO L82 PathProgramCache]: Analyzing trace with hash -509079703, now seen corresponding path program 1 times [2020-09-25 12:28:31,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:31,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486674747] [2020-09-25 12:28:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:31,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:32,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:32,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:34,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:34,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:34,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:35,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:36,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:36,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-09-25 12:28:36,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:28:36,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:28:36,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:36,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:36,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:28:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 12:28:36,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:36,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:36,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:36,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:36,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:36,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:28:37,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:37,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:28:37,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:37,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:37,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:37,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 12:28:37,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 12:28:37,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:37,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 12:28:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:37,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 12:28:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:37,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:37,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:37,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:37,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 12:28:37,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:37,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:28:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 12:28:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:28:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 114 proven. 64 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:28:37,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486674747] [2020-09-25 12:28:37,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:37,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:28:37,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730900880] [2020-09-25 12:28:37,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:37,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:37,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:37,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:37,550 INFO L87 Difference]: Start difference. First operand 999 states and 1180 transitions. Second operand 7 states. [2020-09-25 12:28:41,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:41,446 INFO L93 Difference]: Finished difference Result 2565 states and 3128 transitions. [2020-09-25 12:28:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:41,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-09-25 12:28:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:41,454 INFO L225 Difference]: With dead ends: 2565 [2020-09-25 12:28:41,454 INFO L226 Difference]: Without dead ends: 1772 [2020-09-25 12:28:41,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:41,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2020-09-25 12:28:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1582. [2020-09-25 12:28:41,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-09-25 12:28:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 1890 transitions. [2020-09-25 12:28:41,498 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 1890 transitions. Word has length 270 [2020-09-25 12:28:41,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:41,498 INFO L479 AbstractCegarLoop]: Abstraction has 1582 states and 1890 transitions. [2020-09-25 12:28:41,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:41,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 1890 transitions. [2020-09-25 12:28:41,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-09-25 12:28:41,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:41,506 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:41,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:28:41,507 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:41,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:41,507 INFO L82 PathProgramCache]: Analyzing trace with hash -684315974, now seen corresponding path program 1 times [2020-09-25 12:28:41,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:41,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105877209] [2020-09-25 12:28:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:41,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:42,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking...