/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:33:52,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:52,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:52,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:52,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:52,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:52,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:52,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:52,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:52,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:52,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:52,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:52,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:52,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:52,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:52,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:52,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:52,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:52,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:52,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:52,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:52,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:52,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:52,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:52,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:52,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:52,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:52,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:52,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:52,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:52,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:52,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:52,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:52,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:52,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:52,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:52,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:52,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:52,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:52,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:52,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:52,412 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:33:52,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:52,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:52,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:52,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:52,461 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:52,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:52,463 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:52,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:52,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:52,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:52,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:52,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:52,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:52,465 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:52,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:52,466 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:52,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:52,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:52,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:52,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:52,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:52,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:52,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:52,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:52,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:52,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:52,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:52,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:52,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:52,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:33:52,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:52,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:52,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:52,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:52,933 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:52,935 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 13:33:53,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b9f6e81/9856ff08d5f74438960fe79dc5791458/FLAG232a8a12c [2020-09-25 13:33:53,660 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:53,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 13:33:53,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b9f6e81/9856ff08d5f74438960fe79dc5791458/FLAG232a8a12c [2020-09-25 13:33:53,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b9f6e81/9856ff08d5f74438960fe79dc5791458 [2020-09-25 13:33:53,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:53,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:53,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:53,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:53,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:53,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:53" (1/1) ... [2020-09-25 13:33:53,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:53, skipping insertion in model container [2020-09-25 13:33:53,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:53" (1/1) ... [2020-09-25 13:33:53,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:54,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:54,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:54,529 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:54,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:54,806 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:54,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:54 WrapperNode [2020-09-25 13:33:54,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:54,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:54,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:54,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:54,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:54" (1/1) ... [2020-09-25 13:33:54,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:54" (1/1) ... [2020-09-25 13:33:54,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:54" (1/1) ... [2020-09-25 13:33:54,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:54" (1/1) ... [2020-09-25 13:33:54,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:54" (1/1) ... [2020-09-25 13:33:54,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:54" (1/1) ... [2020-09-25 13:33:54,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:54" (1/1) ... [2020-09-25 13:33:54,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:54,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:54,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:54,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:54,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:55,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:55,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:55,025 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:55,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:56,647 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:56,647 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:56,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:56 BoogieIcfgContainer [2020-09-25 13:33:56,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:56,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:56,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:56,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:56,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:53" (1/3) ... [2020-09-25 13:33:56,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:56, skipping insertion in model container [2020-09-25 13:33:56,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:54" (2/3) ... [2020-09-25 13:33:56,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:56, skipping insertion in model container [2020-09-25 13:33:56,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:56" (3/3) ... [2020-09-25 13:33:56,667 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2020-09-25 13:33:56,679 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:56,690 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:56,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:56,749 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:56,749 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:56,749 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:56,750 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:56,750 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:56,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:56,750 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:56,750 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:33:56,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 13:33:56,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:56,799 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] [2020-09-25 13:33:56,799 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:56,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:56,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1834886135, now seen corresponding path program 1 times [2020-09-25 13:33:56,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:56,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 13:33:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:57,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:57,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:33:57,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:33:57,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-09-25 13:33:57,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:57,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:33:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 13:33:57,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:33:57,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:57,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:57,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:57,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:57,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:33:57,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:57,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:57,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:57,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:57,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:33:57,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:57,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 13:33:57,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:57,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:57,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603439560] [2020-09-25 13:33:57,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:57,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:57,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:57,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:57,891 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:34:00,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:00,008 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 13:34:00,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:34:00,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 13:34:00,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:00,031 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 13:34:00,031 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 13:34:00,044 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 13:34:00,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 13:34:00,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 13:34:00,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 13:34:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 13:34:00,135 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 67 [2020-09-25 13:34:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:00,135 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 13:34:00,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:34:00,136 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 13:34:00,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 13:34:00,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:00,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:00,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:34:00,145 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:00,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:00,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1798381656, now seen corresponding path program 1 times [2020-09-25 13:34:00,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:00,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350703593] [2020-09-25 13:34:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:00,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:00,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:01,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:05,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:05,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 13:34:05,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:34:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 13:34:05,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:05,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:34:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:34:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 13:34:05,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:05,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:05,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:05,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:05,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:05,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:05,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:34:05,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:05,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:05,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:34:05,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:34:05,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:05,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:05,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:05,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:05,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:05,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:05,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 13:34:05,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:05,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:34:05,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:34:05,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350703593] [2020-09-25 13:34:05,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:05,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:34:05,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098633658] [2020-09-25 13:34:05,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:34:05,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:05,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:34:05,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:05,680 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 13:34:07,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:07,472 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 13:34:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:34:07,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 13:34:07,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:07,484 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 13:34:07,485 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 13:34:07,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 13:34:07,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 13:34:07,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 13:34:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 13:34:07,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 13:34:07,556 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 146 [2020-09-25 13:34:07,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:07,559 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 13:34:07,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:34:07,560 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 13:34:07,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 13:34:07,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:07,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:07,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:34:07,576 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:07,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:07,577 INFO L82 PathProgramCache]: Analyzing trace with hash 196926794, now seen corresponding path program 1 times [2020-09-25 13:34:07,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:07,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285718206] [2020-09-25 13:34:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:08,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:11,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 13:34:11,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3858 [2020-09-25 13:34:11,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:11,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:34:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 13:34:11,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:11,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:11,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:11,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:11,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:11,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:34:11,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:11,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:11,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:11,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:11,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:34:11,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:11,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:11,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:11,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:11,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:11,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 13:34:11,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:11,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:34:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:11,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:12,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285718206] [2020-09-25 13:34:12,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:12,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:34:12,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670743592] [2020-09-25 13:34:12,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:34:12,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:12,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:34:12,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:12,004 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 12 states. [2020-09-25 13:34:15,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:15,991 INFO L93 Difference]: Finished difference Result 3115 states and 3932 transitions. [2020-09-25 13:34:15,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 13:34:15,992 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-09-25 13:34:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:16,017 INFO L225 Difference]: With dead ends: 3115 [2020-09-25 13:34:16,017 INFO L226 Difference]: Without dead ends: 2238 [2020-09-25 13:34:16,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:34:16,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2020-09-25 13:34:16,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 1707. [2020-09-25 13:34:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2020-09-25 13:34:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2136 transitions. [2020-09-25 13:34:16,127 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2136 transitions. Word has length 156 [2020-09-25 13:34:16,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:16,134 INFO L479 AbstractCegarLoop]: Abstraction has 1707 states and 2136 transitions. [2020-09-25 13:34:16,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:34:16,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2136 transitions. [2020-09-25 13:34:16,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 13:34:16,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:16,144 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, 2, 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] [2020-09-25 13:34:16,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:34:16,145 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:16,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:16,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1077403518, now seen corresponding path program 1 times [2020-09-25 13:34:16,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:16,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955913165] [2020-09-25 13:34:16,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:16,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:16,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:16,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:17,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:17,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:17,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:19,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:20,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:20,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 13:34:20,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:20,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4612 [2020-09-25 13:34:20,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:20,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:34:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 13:34:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 13:34:20,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:20,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:20,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:20,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:20,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:20,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:34:20,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:20,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:20,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:20,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:20,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:20,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:20,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:20,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:21,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:21,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:21,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:21,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 13:34:21,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:21,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:21,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:21,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 13:34:21,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:21,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:21,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:21,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:21,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:21,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:34:21,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:21,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 13:34:21,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:21,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:34:21,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 120 proven. 47 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:34:21,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955913165] [2020-09-25 13:34:21,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:21,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:21,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561179452] [2020-09-25 13:34:21,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:21,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:21,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:21,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:21,457 INFO L87 Difference]: Start difference. First operand 1707 states and 2136 transitions. Second operand 8 states. [2020-09-25 13:34:25,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:25,133 INFO L93 Difference]: Finished difference Result 5180 states and 6825 transitions. [2020-09-25 13:34:25,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:34:25,134 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-09-25 13:34:25,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:25,153 INFO L225 Difference]: With dead ends: 5180 [2020-09-25 13:34:25,153 INFO L226 Difference]: Without dead ends: 3488 [2020-09-25 13:34:25,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:34:25,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-09-25 13:34:25,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3100. [2020-09-25 13:34:25,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3100 states. [2020-09-25 13:34:25,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 3970 transitions. [2020-09-25 13:34:25,256 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 3970 transitions. Word has length 226 [2020-09-25 13:34:25,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:25,257 INFO L479 AbstractCegarLoop]: Abstraction has 3100 states and 3970 transitions. [2020-09-25 13:34:25,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:25,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 3970 transitions. [2020-09-25 13:34:25,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 13:34:25,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:25,264 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:25,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:25,265 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:25,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:25,265 INFO L82 PathProgramCache]: Analyzing trace with hash 735069318, now seen corresponding path program 1 times [2020-09-25 13:34:25,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:25,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242736609] [2020-09-25 13:34:25,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:25,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:26,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:30,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 13:34:30,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:30,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:34:30,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:30,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:30,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:34:30,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:34:30,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 13:34:30,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:30,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:30,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:30,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:30,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:30,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:34:30,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:30,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:34:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:30,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:30,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:30,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:34:30,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:30,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 13:34:30,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:30,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:34:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:30,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 13:34:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:30,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:31,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:31,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:31,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:31,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-25 13:34:31,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:31,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:34:31,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 13:34:31,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242736609] [2020-09-25 13:34:31,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:31,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:34:31,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076497070] [2020-09-25 13:34:31,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:34:31,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:31,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:34:31,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:31,274 INFO L87 Difference]: Start difference. First operand 3100 states and 3970 transitions. Second operand 12 states. [2020-09-25 13:34:37,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:37,063 INFO L93 Difference]: Finished difference Result 8793 states and 11656 transitions. [2020-09-25 13:34:37,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:34:37,065 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 242 [2020-09-25 13:34:37,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:37,096 INFO L225 Difference]: With dead ends: 8793 [2020-09-25 13:34:37,096 INFO L226 Difference]: Without dead ends: 5824 [2020-09-25 13:34:37,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=213, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:34:37,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-25 13:34:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 5401. [2020-09-25 13:34:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5401 states. [2020-09-25 13:34:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 6844 transitions. [2020-09-25 13:34:37,277 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 6844 transitions. Word has length 242 [2020-09-25 13:34:37,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:37,278 INFO L479 AbstractCegarLoop]: Abstraction has 5401 states and 6844 transitions. [2020-09-25 13:34:37,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:34:37,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 6844 transitions. [2020-09-25 13:34:37,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-09-25 13:34:37,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:37,292 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:37,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:37,292 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:37,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:37,293 INFO L82 PathProgramCache]: Analyzing trace with hash -283548581, now seen corresponding path program 1 times [2020-09-25 13:34:37,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:37,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148283715] [2020-09-25 13:34:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:37,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:37,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:37,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:38,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking...