/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:03:51,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:03:51,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:03:51,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:03:51,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:03:51,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:03:51,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:03:51,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:03:51,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:03:51,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:03:51,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:03:51,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:03:51,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:03:51,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:03:51,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:03:51,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:03:51,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:03:51,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:03:51,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:03:51,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:03:51,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:03:51,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:03:51,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:03:51,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:03:51,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:03:51,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:03:51,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:03:51,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:03:51,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:03:51,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:03:51,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:03:51,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:03:51,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:03:51,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:03:51,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:03:51,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:03:51,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:03:51,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:03:51,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:03:51,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:03:51,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:03:51,416 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 09:03:51,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:03:51,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:03:51,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:03:51,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:03:51,445 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:03:51,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:03:51,445 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:03:51,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:03:51,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:03:51,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:03:51,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:03:51,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:03:51,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:03:51,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:03:51,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:03:51,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:03:51,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:03:51,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:03:51,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:03:51,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:03:51,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:03:51,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:03:51,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:03:51,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:03:51,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:03:51,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:03:51,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:03:51,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:03:51,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:03:51,451 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:03:51,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:03:51,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:03:51,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:03:51,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:03:51,953 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:03:51,954 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 09:03:52,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89cd3797a/38c750007e2f4d44b0e48dee21d277ad/FLAG57d538624 [2020-09-25 09:03:52,691 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:03:52,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 09:03:52,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89cd3797a/38c750007e2f4d44b0e48dee21d277ad/FLAG57d538624 [2020-09-25 09:03:52,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89cd3797a/38c750007e2f4d44b0e48dee21d277ad [2020-09-25 09:03:52,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:03:52,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:03:52,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:52,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:03:52,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:03:52,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:52" (1/1) ... [2020-09-25 09:03:52,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:52, skipping insertion in model container [2020-09-25 09:03:52,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:52" (1/1) ... [2020-09-25 09:03:52,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:03:53,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:03:53,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:53,480 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:03:53,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:53,786 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:03:53,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:53 WrapperNode [2020-09-25 09:03:53,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:53,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:03:53,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:03:53,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:03:53,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:53" (1/1) ... [2020-09-25 09:03:53,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:53" (1/1) ... [2020-09-25 09:03:53,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:53" (1/1) ... [2020-09-25 09:03:53,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:53" (1/1) ... [2020-09-25 09:03:53,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:53" (1/1) ... [2020-09-25 09:03:53,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:53" (1/1) ... [2020-09-25 09:03:53,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:53" (1/1) ... [2020-09-25 09:03:53,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:03:53,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:03:53,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:03:53,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:03:53,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:53" (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 09:03:54,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:03:54,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:03:54,063 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:03:54,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:03:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:03:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:03:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:03:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:03:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:03:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:03:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:03:55,859 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:03:55,859 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:03:55,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:55 BoogieIcfgContainer [2020-09-25 09:03:55,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:03:55,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:03:55,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:03:55,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:03:55,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:03:52" (1/3) ... [2020-09-25 09:03:55,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73de41d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:55, skipping insertion in model container [2020-09-25 09:03:55,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:53" (2/3) ... [2020-09-25 09:03:55,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73de41d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:55, skipping insertion in model container [2020-09-25 09:03:55,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:55" (3/3) ... [2020-09-25 09:03:55,885 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2020-09-25 09:03:55,898 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:03:55,912 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:03:55,937 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:03:55,977 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:03:55,977 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:03:55,978 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:03:55,978 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:03:55,978 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:03:55,978 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:03:55,978 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:03:55,979 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:03:56,015 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:03:56,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 09:03:56,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:56,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:56,049 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:56,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:56,059 INFO L82 PathProgramCache]: Analyzing trace with hash 192415938, now seen corresponding path program 1 times [2020-09-25 09:03:56,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:56,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34633945] [2020-09-25 09:03:56,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:56,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:56,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:57,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:58,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:58,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:59,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:01,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:01,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 09:04:01,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:04:01,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 09:04:01,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:01,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:04:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 09:04:01,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:04:01,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:01,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:01,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:01,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:01,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 09:04:01,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:01,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:04:01,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:01,801 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 09:04:01,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34633945] [2020-09-25 09:04:01,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:01,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:04:01,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231753643] [2020-09-25 09:04:01,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:04:01,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:01,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:04:01,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:04:01,834 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:04:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:04,119 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 09:04:04,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:04:04,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-25 09:04:04,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:04,150 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 09:04:04,150 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 09:04:04,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 09:04:04,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 09:04:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 09:04:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 09:04:04,307 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 163 [2020-09-25 09:04:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:04,308 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 09:04:04,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:04:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 09:04:04,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 09:04:04,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:04,322 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:04,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:04:04,322 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:04,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:04,323 INFO L82 PathProgramCache]: Analyzing trace with hash 157617646, now seen corresponding path program 1 times [2020-09-25 09:04:04,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:04,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927064876] [2020-09-25 09:04:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:04,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:04,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:04,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:05,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:09,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:09,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:09,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 09:04:09,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:04:09,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 09:04:09,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:09,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:09,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:09,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 09:04:09,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 09:04:09,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:09,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:09,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:09,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:09,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:09,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:09,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:04:09,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:09,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:09,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:09,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:09,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:09,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:09,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:09,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:09,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:09,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:09,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:09,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:04:09,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:09,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:04:09,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:09,680 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:09,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927064876] [2020-09-25 09:04:09,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:09,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:09,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758036396] [2020-09-25 09:04:09,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:09,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:09,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:09,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:09,686 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 09:04:12,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:12,105 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 09:04:12,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:12,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 09:04:12,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:12,116 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 09:04:12,116 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 09:04:12,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:12,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 09:04:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 09:04:12,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 09:04:12,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 09:04:12,169 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 181 [2020-09-25 09:04:12,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:12,170 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 09:04:12,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:12,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 09:04:12,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 09:04:12,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:12,177 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:12,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:12,177 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:12,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:12,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1809000221, now seen corresponding path program 1 times [2020-09-25 09:04:12,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:12,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506136389] [2020-09-25 09:04:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:12,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:12,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:12,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:14,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:15,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:15,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:16,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:17,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 09:04:17,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:04:17,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:04:17,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:17,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:04:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 09:04:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 09:04:17,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:04:17,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:17,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:17,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:17,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:17,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:04:17,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:17,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:17,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:17,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:17,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:17,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:04:17,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 09:04:17,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:17,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:04:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:04:17,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:17,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506136389] [2020-09-25 09:04:17,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:17,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:04:17,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675551133] [2020-09-25 09:04:17,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:04:17,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:17,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:04:17,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:17,783 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 8 states. [2020-09-25 09:04:21,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:21,859 INFO L93 Difference]: Finished difference Result 3284 states and 4426 transitions. [2020-09-25 09:04:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:04:21,860 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-09-25 09:04:21,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:21,873 INFO L225 Difference]: With dead ends: 3284 [2020-09-25 09:04:21,873 INFO L226 Difference]: Without dead ends: 2000 [2020-09-25 09:04:21,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:04:21,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2020-09-25 09:04:21,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1950. [2020-09-25 09:04:21,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-09-25 09:04:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2318 transitions. [2020-09-25 09:04:21,952 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2318 transitions. Word has length 187 [2020-09-25 09:04:21,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:21,952 INFO L479 AbstractCegarLoop]: Abstraction has 1950 states and 2318 transitions. [2020-09-25 09:04:21,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:04:21,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2318 transitions. [2020-09-25 09:04:21,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 09:04:21,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:21,963 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:21,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:04:21,963 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:21,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:21,964 INFO L82 PathProgramCache]: Analyzing trace with hash 559246375, now seen corresponding path program 1 times [2020-09-25 09:04:21,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:21,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964159452] [2020-09-25 09:04:21,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:22,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:26,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:26,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:26,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:26,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:26,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 09:04:26,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:04:26,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:04:26,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:26,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 09:04:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 09:04:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:27,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:27,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:27,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:27,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:27,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:27,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:04:27,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:27,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:27,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:27,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:27,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:27,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:04:27,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:27,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 09:04:27,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:27,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:27,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:27,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:04:27,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:27,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964159452] [2020-09-25 09:04:27,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:27,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:27,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743535843] [2020-09-25 09:04:27,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:27,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:27,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:27,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:27,314 INFO L87 Difference]: Start difference. First operand 1950 states and 2318 transitions. Second operand 5 states. [2020-09-25 09:04:29,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:29,534 INFO L93 Difference]: Finished difference Result 4526 states and 5574 transitions. [2020-09-25 09:04:29,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:29,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-09-25 09:04:29,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:29,548 INFO L225 Difference]: With dead ends: 4526 [2020-09-25 09:04:29,548 INFO L226 Difference]: Without dead ends: 1918 [2020-09-25 09:04:29,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:29,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2020-09-25 09:04:29,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1878. [2020-09-25 09:04:29,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2020-09-25 09:04:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2188 transitions. [2020-09-25 09:04:29,616 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2188 transitions. Word has length 197 [2020-09-25 09:04:29,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:29,617 INFO L479 AbstractCegarLoop]: Abstraction has 1878 states and 2188 transitions. [2020-09-25 09:04:29,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:29,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2188 transitions. [2020-09-25 09:04:29,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 09:04:29,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:29,625 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:29,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:04:29,626 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:29,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:29,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1532689640, now seen corresponding path program 1 times [2020-09-25 09:04:29,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:29,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613328402] [2020-09-25 09:04:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:29,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:30,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:30,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:31,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:32,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:33,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:34,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 09:04:34,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:04:34,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 09:04:34,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:34,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 09:04:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 09:04:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:34,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:34,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:34,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:34,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:04:34,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:34,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:34,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:34,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:34,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:34,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:04:34,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:34,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:04:34,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:34,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:04:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:34,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:34,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 09:04:34,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 09:04:34,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:34,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:04:34,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:04:34,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613328402] [2020-09-25 09:04:34,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:34,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:04:34,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875151661] [2020-09-25 09:04:34,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:04:34,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:34,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:04:34,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:34,899 INFO L87 Difference]: Start difference. First operand 1878 states and 2188 transitions. Second operand 7 states. [2020-09-25 09:04:37,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:37,538 INFO L93 Difference]: Finished difference Result 3819 states and 4593 transitions. [2020-09-25 09:04:37,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:04:37,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-25 09:04:37,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:37,550 INFO L225 Difference]: With dead ends: 3819 [2020-09-25 09:04:37,550 INFO L226 Difference]: Without dead ends: 1963 [2020-09-25 09:04:37,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:04:37,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2020-09-25 09:04:37,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1763. [2020-09-25 09:04:37,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2020-09-25 09:04:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2026 transitions. [2020-09-25 09:04:37,614 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2026 transitions. Word has length 201 [2020-09-25 09:04:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:37,614 INFO L479 AbstractCegarLoop]: Abstraction has 1763 states and 2026 transitions. [2020-09-25 09:04:37,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:04:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2026 transitions. [2020-09-25 09:04:37,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 09:04:37,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:37,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:37,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:04:37,623 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:37,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:37,624 INFO L82 PathProgramCache]: Analyzing trace with hash 867383139, now seen corresponding path program 1 times [2020-09-25 09:04:37,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:37,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388752143] [2020-09-25 09:04:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:37,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:40,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:41,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking...