/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=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:51:50,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:51:50,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:51:50,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:51:50,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:51:50,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:51:50,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:51:50,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:51:50,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:51:50,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:51:50,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:51:50,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:51:50,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:51:50,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:51:50,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:51:50,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:51:50,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:51:50,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:51:50,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:51:50,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:51:50,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:51:50,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:51:50,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:51:50,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:51:50,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:51:50,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:51:50,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:51:50,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:51:50,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:51:50,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:51:50,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:51:50,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:51:50,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:51:50,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:51:50,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:51:50,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:51:50,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:51:50,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:51:50,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:51:50,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:51:50,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:51:50,404 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 07:51:50,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:51:50,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:51:50,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:51:50,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:51:50,450 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:51:50,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:51:50,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:51:50,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:51:50,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:51:50,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:51:50,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:51:50,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:51:50,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:51:50,452 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:51:50,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:51:50,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:51:50,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:51:50,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:51:50,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:51:50,453 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:51:50,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:51:50,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:51:50,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:51:50,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:51:50,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:51:50,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:51:50,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:51:50,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:51:50,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:51:50,455 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:51:50,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:51:50,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:51:50,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:51:50,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:51:50,953 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:51:50,955 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 07:51:51,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d437d2452/1a914beff15a485482faf95b45a06c75/FLAG33f8f9cd8 [2020-09-25 07:51:51,699 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:51:51,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 07:51:51,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d437d2452/1a914beff15a485482faf95b45a06c75/FLAG33f8f9cd8 [2020-09-25 07:51:51,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d437d2452/1a914beff15a485482faf95b45a06c75 [2020-09-25 07:51:51,959 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:51:51,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:51:51,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:51,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:51:51,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:51:51,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:51" (1/1) ... [2020-09-25 07:51:51,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb58955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:51, skipping insertion in model container [2020-09-25 07:51:51,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:51" (1/1) ... [2020-09-25 07:51:51,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:51:52,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:51:52,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:52,670 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:51:52,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:52,814 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:51:52,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:52 WrapperNode [2020-09-25 07:51:52,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:52,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:51:52,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:51:52,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:51:52,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:52" (1/1) ... [2020-09-25 07:51:52,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:52" (1/1) ... [2020-09-25 07:51:52,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:52" (1/1) ... [2020-09-25 07:51:52,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:52" (1/1) ... [2020-09-25 07:51:52,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:52" (1/1) ... [2020-09-25 07:51:52,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:52" (1/1) ... [2020-09-25 07:51:52,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:52" (1/1) ... [2020-09-25 07:51:52,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:51:52,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:51:52,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:51:52,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:51:52,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:52" (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 07:51:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:51:53,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:51:53,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:51:53,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:51:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:51:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:51:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:51:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:51:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:51:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:51:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:51:54,337 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:51:54,338 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:51:54,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:54 BoogieIcfgContainer [2020-09-25 07:51:54,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:51:54,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:51:54,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:51:54,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:51:54,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:51:51" (1/3) ... [2020-09-25 07:51:54,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abe8249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:54, skipping insertion in model container [2020-09-25 07:51:54,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:52" (2/3) ... [2020-09-25 07:51:54,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abe8249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:54, skipping insertion in model container [2020-09-25 07:51:54,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:54" (3/3) ... [2020-09-25 07:51:54,364 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2020-09-25 07:51:54,376 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:51:54,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:51:54,416 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:51:54,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:51:54,470 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:51:54,470 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:51:54,470 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:51:54,471 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:51:54,471 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:51:54,471 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:51:54,471 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:51:54,516 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:51:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 07:51:54,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:54,556 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] [2020-09-25 07:51:54,557 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:54,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:54,565 INFO L82 PathProgramCache]: Analyzing trace with hash 907543029, now seen corresponding path program 1 times [2020-09-25 07:51:54,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:54,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428992317] [2020-09-25 07:51:54,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:55,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:55,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:55,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:59,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:59,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 07:51:59,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:51:59,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:51:59,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:59,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:51:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 07:51:59,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:52:00,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:00,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:00,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:00,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:00,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:00,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 07:52:00,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:00,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:52:00,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:00,272 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 07:52:00,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428992317] [2020-09-25 07:52:00,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:00,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:52:00,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320838564] [2020-09-25 07:52:00,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:52:00,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:00,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:52:00,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:52:00,305 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:52:02,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:02,828 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 07:52:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:52:02,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 07:52:02,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:02,872 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 07:52:02,872 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 07:52:02,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 07:52:02,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 07:52:03,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 07:52:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 07:52:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 07:52:03,040 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 143 [2020-09-25 07:52:03,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:03,044 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 07:52:03,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:52:03,045 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 07:52:03,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 07:52:03,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:03,055 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] [2020-09-25 07:52:03,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:52:03,056 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:03,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:03,057 INFO L82 PathProgramCache]: Analyzing trace with hash 201587256, now seen corresponding path program 1 times [2020-09-25 07:52:03,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:03,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090422623] [2020-09-25 07:52:03,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:03,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:03,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:06,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:06,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:06,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:08,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:08,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 07:52:08,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:08,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 07:52:08,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:08,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 07:52:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 07:52:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:08,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:08,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:08,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:08,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:52:08,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:08,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:08,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:08,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:08,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:08,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:08,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:52:08,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:08,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:52:08,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:08,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:52:08,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:08,443 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 07:52:08,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090422623] [2020-09-25 07:52:08,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:08,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:08,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515013438] [2020-09-25 07:52:08,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:08,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:08,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:08,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:08,452 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-25 07:52:10,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:10,261 INFO L93 Difference]: Finished difference Result 1505 states and 1856 transitions. [2020-09-25 07:52:10,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:10,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 07:52:10,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:10,277 INFO L225 Difference]: With dead ends: 1505 [2020-09-25 07:52:10,277 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 07:52:10,285 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 07:52:10,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 07:52:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 891. [2020-09-25 07:52:10,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 07:52:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1084 transitions. [2020-09-25 07:52:10,331 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1084 transitions. Word has length 160 [2020-09-25 07:52:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:10,332 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1084 transitions. [2020-09-25 07:52:10,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1084 transitions. [2020-09-25 07:52:10,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 07:52:10,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:10,338 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:10,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:52:10,339 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:10,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:10,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1554589942, now seen corresponding path program 1 times [2020-09-25 07:52:10,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:10,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959354145] [2020-09-25 07:52:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:10,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:10,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:10,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:11,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:12,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:15,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:15,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 07:52:15,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:52:15,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 07:52:15,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:15,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:15,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:52:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 07:52:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:15,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:15,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:15,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:15,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:15,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:15,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:52:15,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:15,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:15,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:15,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:15,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:15,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:15,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:15,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:15,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:15,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:52:15,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:15,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:15,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:15,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:52:15,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:52:15,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:52:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:15,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:15,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 07:52:15,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:15,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 07:52:15,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:15,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:52:15,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:52:15,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959354145] [2020-09-25 07:52:15,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:15,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:52:15,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365033317] [2020-09-25 07:52:15,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:15,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:15,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:15,873 INFO L87 Difference]: Start difference. First operand 891 states and 1084 transitions. Second operand 7 states. [2020-09-25 07:52:17,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:17,916 INFO L93 Difference]: Finished difference Result 2144 states and 2702 transitions. [2020-09-25 07:52:17,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:52:17,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-25 07:52:17,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:17,927 INFO L225 Difference]: With dead ends: 2144 [2020-09-25 07:52:17,927 INFO L226 Difference]: Without dead ends: 1277 [2020-09-25 07:52:17,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:52:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-09-25 07:52:17,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1077. [2020-09-25 07:52:17,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-09-25 07:52:17,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1328 transitions. [2020-09-25 07:52:17,983 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1328 transitions. Word has length 205 [2020-09-25 07:52:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:17,992 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1328 transitions. [2020-09-25 07:52:17,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:17,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1328 transitions. [2020-09-25 07:52:17,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 07:52:17,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:17,999 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:17,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:52:18,000 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:18,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:18,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1933456907, now seen corresponding path program 1 times [2020-09-25 07:52:18,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:18,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40075847] [2020-09-25 07:52:18,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:18,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:18,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:19,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:23,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:23,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 07:52:23,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:52:23,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 07:52:23,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:23,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:52:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 07:52:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 07:52:23,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:23,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:23,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:23,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:23,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:23,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 07:52:23,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:23,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:23,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:23,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:23,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:23,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:23,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:52:23,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:23,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 07:52:23,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:23,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:52:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:52:23,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:23,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:52:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:23,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:23,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:23,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 07:52:23,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:23,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 07:52:23,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:23,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:52:23,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:52:23,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40075847] [2020-09-25 07:52:23,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:23,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:52:23,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150722930] [2020-09-25 07:52:23,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:52:23,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:23,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:52:23,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:52:23,562 INFO L87 Difference]: Start difference. First operand 1077 states and 1328 transitions. Second operand 8 states. [2020-09-25 07:52:24,132 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-09-25 07:52:26,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:26,887 INFO L93 Difference]: Finished difference Result 2864 states and 3603 transitions. [2020-09-25 07:52:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 07:52:26,888 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-09-25 07:52:26,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:26,907 INFO L225 Difference]: With dead ends: 2864 [2020-09-25 07:52:26,907 INFO L226 Difference]: Without dead ends: 1811 [2020-09-25 07:52:26,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 07:52:26,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2020-09-25 07:52:26,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1701. [2020-09-25 07:52:26,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1701 states. [2020-09-25 07:52:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2088 transitions. [2020-09-25 07:52:26,986 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2088 transitions. Word has length 212 [2020-09-25 07:52:26,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:26,987 INFO L479 AbstractCegarLoop]: Abstraction has 1701 states and 2088 transitions. [2020-09-25 07:52:26,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:52:26,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2088 transitions. [2020-09-25 07:52:26,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 07:52:26,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:26,998 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:26,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:52:26,998 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:26,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:26,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1545156718, now seen corresponding path program 1 times [2020-09-25 07:52:26,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:26,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237785357] [2020-09-25 07:52:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:27,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:32,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 07:52:32,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:52:32,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:52:32,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:32,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 07:52:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 07:52:32,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:32,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:32,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:32,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:32,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:32,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:52:32,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:32,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:32,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:32,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:32,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:32,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:32,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:32,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:32,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:52:32,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:32,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:52:32,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:32,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:32,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:52:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:32,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:32,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 07:52:32,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:32,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 07:52:32,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:32,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 07:52:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 07:52:32,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237785357] [2020-09-25 07:52:32,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:32,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:32,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284358157] [2020-09-25 07:52:32,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:32,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:32,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:32,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:32,420 INFO L87 Difference]: Start difference. First operand 1701 states and 2088 transitions. Second operand 5 states. [2020-09-25 07:52:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:34,297 INFO L93 Difference]: Finished difference Result 3960 states and 4893 transitions. [2020-09-25 07:52:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:34,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-09-25 07:52:34,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:34,313 INFO L225 Difference]: With dead ends: 3960 [2020-09-25 07:52:34,313 INFO L226 Difference]: Without dead ends: 1632 [2020-09-25 07:52:34,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 07:52:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2020-09-25 07:52:34,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1622. [2020-09-25 07:52:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1622 states. [2020-09-25 07:52:34,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 1963 transitions. [2020-09-25 07:52:34,384 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 1963 transitions. Word has length 227 [2020-09-25 07:52:34,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:34,384 INFO L479 AbstractCegarLoop]: Abstraction has 1622 states and 1963 transitions. [2020-09-25 07:52:34,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 1963 transitions. [2020-09-25 07:52:34,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 07:52:34,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:34,393 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:34,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:52:34,393 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:34,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1062084122, now seen corresponding path program 1 times [2020-09-25 07:52:34,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:34,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295374577] [2020-09-25 07:52:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:39,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:39,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 07:52:39,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:52:39,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 07:52:39,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:39,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:39,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:39,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 07:52:39,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-25 07:52:39,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:39,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:39,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:39,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:39,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:39,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:39,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:52:39,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:39,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:39,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:39,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:39,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:39,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:39,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:52:39,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:39,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:52:39,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:39,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:52:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:52:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:39,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:39,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:39,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:39,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 07:52:39,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:52:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 07:52:39,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:39,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 07:52:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 64 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 07:52:39,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295374577] [2020-09-25 07:52:39,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:39,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:52:39,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879415173] [2020-09-25 07:52:39,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:52:39,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:39,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:52:39,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:39,852 INFO L87 Difference]: Start difference. First operand 1622 states and 1963 transitions. Second operand 6 states.