/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=0.6 --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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:43:55,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:43:55,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:43:55,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:43:55,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:43:55,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:43:55,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:43:55,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:43:55,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:43:55,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:43:55,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:43:55,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:43:55,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:43:55,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:43:55,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:43:55,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:43:55,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:43:55,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:43:55,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:43:55,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:43:55,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:43:55,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:43:55,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:43:55,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:43:55,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:43:55,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:43:55,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:43:55,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:43:55,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:43:55,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:43:55,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:43:55,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:43:55,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:43:55,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:43:55,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:43:55,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:43:55,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:43:55,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:43:55,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:43:55,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:43:55,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:43:55,365 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 06:43:55,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:43:55,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:43:55,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:43:55,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:43:55,396 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:43:55,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:43:55,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:43:55,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:43:55,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:43:55,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:43:55,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:43:55,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:43:55,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:43:55,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:43:55,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:43:55,401 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:43:55,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:43:55,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:43:55,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:43:55,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:43:55,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:43:55,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:55,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:43:55,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:43:55,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:43:55,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:43:55,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:43:55,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:43:55,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:43:55,406 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:43:55,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:43:55,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:43:55,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:43:55,939 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:43:55,940 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:43:55,941 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2020-09-25 06:43:56,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98750f4d/243b4f77dfc54c59bf8a9f79e8ad6bd5/FLAG4b0cf737f [2020-09-25 06:43:56,734 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:43:56,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2020-09-25 06:43:56,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98750f4d/243b4f77dfc54c59bf8a9f79e8ad6bd5/FLAG4b0cf737f [2020-09-25 06:43:56,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98750f4d/243b4f77dfc54c59bf8a9f79e8ad6bd5 [2020-09-25 06:43:56,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:43:56,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:43:56,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:56,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:43:56,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:43:56,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:56" (1/1) ... [2020-09-25 06:43:56,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe12ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:56, skipping insertion in model container [2020-09-25 06:43:56,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:56" (1/1) ... [2020-09-25 06:43:56,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:43:57,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:43:57,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:57,544 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:43:57,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:57,862 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:43:57,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:57 WrapperNode [2020-09-25 06:43:57,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:57,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:43:57,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:43:57,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:43:57,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:57" (1/1) ... [2020-09-25 06:43:57,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:57" (1/1) ... [2020-09-25 06:43:57,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:57" (1/1) ... [2020-09-25 06:43:57,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:57" (1/1) ... [2020-09-25 06:43:57,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:57" (1/1) ... [2020-09-25 06:43:58,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:57" (1/1) ... [2020-09-25 06:43:58,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:57" (1/1) ... [2020-09-25 06:43:58,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:43:58,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:43:58,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:43:58,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:43:58,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:57" (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 06:43:58,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:43:58,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:43:58,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:43:58,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:43:58,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:43:58,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:43:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:43:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:43:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:43:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:43:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:43:59,457 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:43:59,458 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:43:59,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:59 BoogieIcfgContainer [2020-09-25 06:43:59,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:43:59,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:43:59,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:43:59,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:43:59,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:43:56" (1/3) ... [2020-09-25 06:43:59,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:59, skipping insertion in model container [2020-09-25 06:43:59,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:57" (2/3) ... [2020-09-25 06:43:59,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:59, skipping insertion in model container [2020-09-25 06:43:59,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:59" (3/3) ... [2020-09-25 06:43:59,478 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label08.c [2020-09-25 06:43:59,490 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:43:59,502 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:43:59,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:43:59,561 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:43:59,562 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:43:59,562 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:43:59,562 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:43:59,562 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:43:59,562 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:43:59,562 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:43:59,563 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:43:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:43:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 06:43:59,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:59,622 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] [2020-09-25 06:43:59,622 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:59,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:59,632 INFO L82 PathProgramCache]: Analyzing trace with hash 524055129, now seen corresponding path program 1 times [2020-09-25 06:43:59,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:59,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66102414] [2020-09-25 06:43:59,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:59,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:01,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:01,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:02,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:03,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:04,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:04,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:04,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:04,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 06:44:04,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:44:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:44:04,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:04,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:44:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 06:44:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:44:05,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:05,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:05,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:05,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:05,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:05,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 06:44:05,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:05,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:44:05,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:05,292 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 06:44:05,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66102414] [2020-09-25 06:44:05,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:44:05,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:44:05,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009017934] [2020-09-25 06:44:05,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:44:05,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:05,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:44:05,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:44:05,340 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:44:07,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:07,641 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 06:44:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:44:07,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-25 06:44:07,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:07,685 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 06:44:07,685 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 06:44:07,699 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 06:44:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 06:44:07,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 06:44:07,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 06:44:07,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 06:44:07,832 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 148 [2020-09-25 06:44:07,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:07,833 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 06:44:07,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:44:07,833 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 06:44:07,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 06:44:07,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:07,842 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] [2020-09-25 06:44:07,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:44:07,843 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:07,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:07,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2109946541, now seen corresponding path program 1 times [2020-09-25 06:44:07,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:07,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320273903] [2020-09-25 06:44:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:08,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:08,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:08,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:09,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:12,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 06:44:12,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:44:12,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 06:44:12,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:12,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:12,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:12,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:44:12,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 06:44:12,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:13,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:13,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:13,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:13,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:13,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:44:13,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:13,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:13,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:13,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:13,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:13,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:44:13,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:44:13,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:13,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:13,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:44:13,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:13,206 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 06:44:13,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320273903] [2020-09-25 06:44:13,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:13,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:13,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752959452] [2020-09-25 06:44:13,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:13,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:13,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:13,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:13,210 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 06:44:15,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:15,113 INFO L93 Difference]: Finished difference Result 1753 states and 2209 transitions. [2020-09-25 06:44:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:15,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 06:44:15,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:15,124 INFO L225 Difference]: With dead ends: 1753 [2020-09-25 06:44:15,124 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 06:44:15,127 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 06:44:15,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 06:44:15,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 881. [2020-09-25 06:44:15,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 06:44:15,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1094 transitions. [2020-09-25 06:44:15,179 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1094 transitions. Word has length 166 [2020-09-25 06:44:15,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:15,181 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1094 transitions. [2020-09-25 06:44:15,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:15,181 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1094 transitions. [2020-09-25 06:44:15,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 06:44:15,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:15,189 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] [2020-09-25 06:44:15,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:44:15,190 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:15,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:15,191 INFO L82 PathProgramCache]: Analyzing trace with hash -2122100332, now seen corresponding path program 1 times [2020-09-25 06:44:15,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:15,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024006257] [2020-09-25 06:44:15,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:16,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:20,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 06:44:20,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:20,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:44:20,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:20,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 06:44:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 06:44:20,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:20,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:20,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:20,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:20,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:20,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:44:20,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:20,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:20,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:20,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:20,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:44:20,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:20,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:20,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:44:20,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:20,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 06:44:20,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:20,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:20,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:20,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:20,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:44:20,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:20,553 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 06:44:20,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024006257] [2020-09-25 06:44:20,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:20,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:20,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490105128] [2020-09-25 06:44:20,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:20,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:20,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:20,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:20,559 INFO L87 Difference]: Start difference. First operand 881 states and 1094 transitions. Second operand 5 states. [2020-09-25 06:44:22,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:22,621 INFO L93 Difference]: Finished difference Result 2227 states and 2891 transitions. [2020-09-25 06:44:22,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:22,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 06:44:22,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:22,630 INFO L225 Difference]: With dead ends: 2227 [2020-09-25 06:44:22,631 INFO L226 Difference]: Without dead ends: 1368 [2020-09-25 06:44:22,634 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 06:44:22,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2020-09-25 06:44:22,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1339. [2020-09-25 06:44:22,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2020-09-25 06:44:22,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1738 transitions. [2020-09-25 06:44:22,683 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1738 transitions. Word has length 182 [2020-09-25 06:44:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:22,684 INFO L479 AbstractCegarLoop]: Abstraction has 1339 states and 1738 transitions. [2020-09-25 06:44:22,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:22,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1738 transitions. [2020-09-25 06:44:22,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-25 06:44:22,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:22,695 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:22,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:44:22,696 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:22,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:22,697 INFO L82 PathProgramCache]: Analyzing trace with hash 201500591, now seen corresponding path program 1 times [2020-09-25 06:44:22,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:22,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435053494] [2020-09-25 06:44:22,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:22,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:22,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:26,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:27,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:27,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-09-25 06:44:27,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:27,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:44:27,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:27,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 06:44:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-09-25 06:44:27,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:27,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:27,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:27,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:27,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:44:27,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:27,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:27,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:27,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:27,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:27,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:27,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 06:44:27,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:27,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:44:27,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:27,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 06:44:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:28,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:28,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 06:44:28,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:44:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 06:44:28,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:28,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 06:44:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 72 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:44:28,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435053494] [2020-09-25 06:44:28,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:28,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:44:28,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386876345] [2020-09-25 06:44:28,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:44:28,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:28,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:44:28,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:28,390 INFO L87 Difference]: Start difference. First operand 1339 states and 1738 transitions. Second operand 7 states. [2020-09-25 06:44:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:31,963 INFO L93 Difference]: Finished difference Result 4065 states and 5661 transitions. [2020-09-25 06:44:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:44:31,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-09-25 06:44:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:31,991 INFO L225 Difference]: With dead ends: 4065 [2020-09-25 06:44:31,992 INFO L226 Difference]: Without dead ends: 2748 [2020-09-25 06:44:32,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:44:32,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2020-09-25 06:44:32,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2516. [2020-09-25 06:44:32,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2020-09-25 06:44:32,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3268 transitions. [2020-09-25 06:44:32,132 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3268 transitions. Word has length 271 [2020-09-25 06:44:32,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:32,133 INFO L479 AbstractCegarLoop]: Abstraction has 2516 states and 3268 transitions. [2020-09-25 06:44:32,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:44:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3268 transitions. [2020-09-25 06:44:32,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-09-25 06:44:32,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:32,147 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:32,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:44:32,148 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:32,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:32,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1915866502, now seen corresponding path program 1 times [2020-09-25 06:44:32,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:32,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939164723] [2020-09-25 06:44:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:32,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:32,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:34,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:34,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-09-25 06:44:34,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:44:34,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2222 [2020-09-25 06:44:34,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:34,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 06:44:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-09-25 06:44:34,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:34,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:34,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:34,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:34,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:34,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:44:34,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:34,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:34,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:34,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:34,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:44:34,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:34,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:44:34,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:34,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:34,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:34,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:34,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:44:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:34,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:34,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:34,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:44:34,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:34,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:44:34,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:34,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:34,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:34,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:44:34,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:34,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 06:44:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:34,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:34,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 06:44:34,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:44:34,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 06:44:34,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:34,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 06:44:34,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 80 proven. 73 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 06:44:35,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939164723] [2020-09-25 06:44:35,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:35,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:44:35,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898363959] [2020-09-25 06:44:35,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:44:35,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:35,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:44:35,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:35,059 INFO L87 Difference]: Start difference. First operand 2516 states and 3268 transitions. Second operand 6 states. [2020-09-25 06:44:37,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:37,565 INFO L93 Difference]: Finished difference Result 6413 states and 8659 transitions. [2020-09-25 06:44:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:44:37,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 289 [2020-09-25 06:44:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:37,591 INFO L225 Difference]: With dead ends: 6413 [2020-09-25 06:44:37,591 INFO L226 Difference]: Without dead ends: 3929 [2020-09-25 06:44:37,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:44:37,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2020-09-25 06:44:37,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3406. [2020-09-25 06:44:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3406 states. [2020-09-25 06:44:37,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 4350 transitions. [2020-09-25 06:44:37,713 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 4350 transitions. Word has length 289 [2020-09-25 06:44:37,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:37,714 INFO L479 AbstractCegarLoop]: Abstraction has 3406 states and 4350 transitions. [2020-09-25 06:44:37,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:44:37,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 4350 transitions. [2020-09-25 06:44:37,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-09-25 06:44:37,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:37,733 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:44:37,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:44:37,733 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:37,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:37,734 INFO L82 PathProgramCache]: Analyzing trace with hash 760350118, now seen corresponding path program 1 times [2020-09-25 06:44:37,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:37,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877547997] [2020-09-25 06:44:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:37,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:38,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:38,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:39,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:40,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:42,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:42,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-09-25 06:44:42,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:44:42,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:44:42,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:42,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 06:44:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 06:44:42,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:42,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:42,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:42,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:42,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:42,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:42,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:44:42,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:42,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:42,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:42,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:42,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:43,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:43,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 06:44:43,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:43,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 06:44:43,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:43,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:43,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:43,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:44:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:43,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 06:44:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:43,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:43,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:43,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 06:44:43,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:43,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 06:44:43,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:43,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 06:44:43,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:44:43,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877547997] [2020-09-25 06:44:43,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:43,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:44:43,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15023118] [2020-09-25 06:44:43,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:44:43,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:43,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:44:43,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:43,284 INFO L87 Difference]: Start difference. First operand 3406 states and 4350 transitions. Second operand 7 states.