/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/Problem11_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:48:41,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:48:41,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:48:41,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:48:41,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:48:41,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:48:41,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:48:41,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:48:41,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:48:41,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:48:41,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:48:41,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:48:41,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:48:41,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:48:41,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:48:41,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:48:41,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:48:41,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:48:41,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:48:41,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:48:41,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:48:41,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:48:41,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:48:41,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:48:41,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:48:41,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:48:41,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:48:41,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:48:41,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:48:41,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:48:41,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:48:41,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:48:41,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:48:41,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:48:41,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:48:41,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:48:41,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:48:41,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:48:41,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:48:41,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:48:41,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:48:41,400 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 06:48:41,427 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:48:41,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:48:41,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:48:41,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:48:41,429 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:48:41,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:48:41,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:48:41,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:48:41,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:48:41,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:48:41,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:48:41,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:48:41,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:48:41,431 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:48:41,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:48:41,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:48:41,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:48:41,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:48:41,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:48:41,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:48:41,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:48:41,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:48:41,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:48:41,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:48:41,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:48:41,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:48:41,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:48:41,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:48:41,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:48:41,434 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 06:48:41,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:48:41,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:48:41,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:48:41,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:48:41,908 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:48:41,909 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 06:48:41,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/735c6d347/702832ba0ff34b2bb098fc6a645ca451/FLAG7416ba003 [2020-09-25 06:48:42,714 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:48:42,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 06:48:42,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/735c6d347/702832ba0ff34b2bb098fc6a645ca451/FLAG7416ba003 [2020-09-25 06:48:42,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/735c6d347/702832ba0ff34b2bb098fc6a645ca451 [2020-09-25 06:48:42,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:48:42,917 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:48:42,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:42,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:48:42,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:48:42,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:42" (1/1) ... [2020-09-25 06:48:42,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:42, skipping insertion in model container [2020-09-25 06:48:42,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:42" (1/1) ... [2020-09-25 06:48:42,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:48:43,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:48:43,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:43,862 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:48:44,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:44,090 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:48:44,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44 WrapperNode [2020-09-25 06:48:44,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:44,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:48:44,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:48:44,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:48:44,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:48:44,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:48:44,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:48:44,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:48:44,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (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 06:48:44,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:48:44,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:48:44,371 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:48:44,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:48:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:48:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:48:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:48:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:48:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:48:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:48:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:48:46,918 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:48:46,918 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:48:46,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:46 BoogieIcfgContainer [2020-09-25 06:48:46,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:48:46,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:48:46,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:48:46,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:48:46,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:48:42" (1/3) ... [2020-09-25 06:48:46,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143673f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:46, skipping insertion in model container [2020-09-25 06:48:46,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (2/3) ... [2020-09-25 06:48:46,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143673f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:46, skipping insertion in model container [2020-09-25 06:48:46,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:46" (3/3) ... [2020-09-25 06:48:46,941 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label36.c [2020-09-25 06:48:46,953 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:48:46,965 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:48:46,992 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:48:47,026 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:48:47,027 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:48:47,027 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:48:47,027 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:48:47,027 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:48:47,027 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:48:47,027 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:48:47,028 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:48:47,068 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 06:48:47,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 06:48:47,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:47,079 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] [2020-09-25 06:48:47,079 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:47,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:47,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1149620956, now seen corresponding path program 1 times [2020-09-25 06:48:47,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:47,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709693528] [2020-09-25 06:48:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:47,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:47,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:48,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:48,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 06:48:48,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:48:48,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 990 [2020-09-25 06:48:48,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:48,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:48:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:48:48,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:48:48,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:48,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:48,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:48,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:48:48,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:48,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:48:48,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:48,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:48:48,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:48,432 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 06:48:48,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709693528] [2020-09-25 06:48:48,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:48,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:48:48,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373428427] [2020-09-25 06:48:48,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:48:48,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:48,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:48:48,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:48:48,467 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-25 06:48:53,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:53,642 INFO L93 Difference]: Finished difference Result 2231 states and 3021 transitions. [2020-09-25 06:48:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:48:53,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-25 06:48:53,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:53,677 INFO L225 Difference]: With dead ends: 2231 [2020-09-25 06:48:53,677 INFO L226 Difference]: Without dead ends: 1325 [2020-09-25 06:48:53,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:53,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-09-25 06:48:53,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 997. [2020-09-25 06:48:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 06:48:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1185 transitions. [2020-09-25 06:48:53,831 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1185 transitions. Word has length 34 [2020-09-25 06:48:53,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:53,832 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1185 transitions. [2020-09-25 06:48:53,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:48:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1185 transitions. [2020-09-25 06:48:53,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 06:48:53,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:53,842 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:48:53,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:48:53,843 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:53,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:53,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1328266352, now seen corresponding path program 1 times [2020-09-25 06:48:53,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:53,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828260370] [2020-09-25 06:48:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:53,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:56,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:56,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 06:48:56,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:48:56,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2853 [2020-09-25 06:48:56,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:56,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:56,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:56,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:48:56,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:48:56,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:56,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:56,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:56,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:56,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:48:56,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:56,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:48:56,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:56,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:56,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:48:56,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:56,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:48:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:56,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:57,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:57,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:48:57,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:57,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 06:48:57,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:57,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:48:57,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:57,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828260370] [2020-09-25 06:48:57,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:57,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:57,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498412865] [2020-09-25 06:48:57,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:57,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:57,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:57,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:57,210 INFO L87 Difference]: Start difference. First operand 997 states and 1185 transitions. Second operand 7 states. [2020-09-25 06:49:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:01,723 INFO L93 Difference]: Finished difference Result 2663 states and 3253 transitions. [2020-09-25 06:49:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:49:01,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-09-25 06:49:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:01,736 INFO L225 Difference]: With dead ends: 2663 [2020-09-25 06:49:01,736 INFO L226 Difference]: Without dead ends: 1683 [2020-09-25 06:49:01,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 06:49:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2020-09-25 06:49:01,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1400. [2020-09-25 06:49:01,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1400 states. [2020-09-25 06:49:01,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1710 transitions. [2020-09-25 06:49:01,827 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1710 transitions. Word has length 116 [2020-09-25 06:49:01,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:01,830 INFO L479 AbstractCegarLoop]: Abstraction has 1400 states and 1710 transitions. [2020-09-25 06:49:01,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:01,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1710 transitions. [2020-09-25 06:49:01,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 06:49:01,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:01,842 INFO L422 BasicCegarLoop]: trace histogram [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 06:49:01,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:49:01,843 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:01,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:01,843 INFO L82 PathProgramCache]: Analyzing trace with hash -2011577567, now seen corresponding path program 1 times [2020-09-25 06:49:01,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:01,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193279324] [2020-09-25 06:49:01,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:01,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:02,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:02,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:06,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:06,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 06:49:06,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:49:06,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:49:06,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:06,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:49:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 06:49:06,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:07,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:07,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:07,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:07,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:49:07,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:49:07,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:07,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:07,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:49:07,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:07,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:49:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:07,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:07,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 06:49:07,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:07,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 06:49:07,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:07,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:07,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 06:49:07,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:07,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193279324] [2020-09-25 06:49:07,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:07,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:49:07,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507686926] [2020-09-25 06:49:07,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:07,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:07,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:07,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:07,403 INFO L87 Difference]: Start difference. First operand 1400 states and 1710 transitions. Second operand 7 states. [2020-09-25 06:49:12,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:12,390 INFO L93 Difference]: Finished difference Result 3472 states and 4277 transitions. [2020-09-25 06:49:12,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:49:12,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-09-25 06:49:12,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:12,401 INFO L225 Difference]: With dead ends: 3472 [2020-09-25 06:49:12,402 INFO L226 Difference]: Without dead ends: 2089 [2020-09-25 06:49:12,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 06:49:12,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-09-25 06:49:12,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1850. [2020-09-25 06:49:12,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1850 states. [2020-09-25 06:49:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 2265 transitions. [2020-09-25 06:49:12,515 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 2265 transitions. Word has length 119 [2020-09-25 06:49:12,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:12,515 INFO L479 AbstractCegarLoop]: Abstraction has 1850 states and 2265 transitions. [2020-09-25 06:49:12,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:12,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 2265 transitions. [2020-09-25 06:49:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 06:49:12,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:12,517 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:49:12,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:49:12,518 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:12,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:12,518 INFO L82 PathProgramCache]: Analyzing trace with hash -27313025, now seen corresponding path program 1 times [2020-09-25 06:49:12,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:12,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809378637] [2020-09-25 06:49:12,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:12,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:13,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:13,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:13,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:13,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:13,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:15,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:17,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:17,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 06:49:17,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:49:17,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4892 [2020-09-25 06:49:17,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:17,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:17,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:49:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 06:49:17,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:17,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:17,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:17,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:17,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:49:17,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:17,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:49:17,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:17,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:49:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:17,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:49:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:17,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:17,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 06:49:17,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:17,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 06:49:17,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:17,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 06:49:17,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:17,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809378637] [2020-09-25 06:49:17,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:17,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:49:17,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182676666] [2020-09-25 06:49:17,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:17,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:17,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:17,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:17,817 INFO L87 Difference]: Start difference. First operand 1850 states and 2265 transitions. Second operand 7 states. [2020-09-25 06:49:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:21,896 INFO L93 Difference]: Finished difference Result 4088 states and 5229 transitions. [2020-09-25 06:49:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:49:21,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-09-25 06:49:21,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:21,913 INFO L225 Difference]: With dead ends: 4088 [2020-09-25 06:49:21,914 INFO L226 Difference]: Without dead ends: 2255 [2020-09-25 06:49:21,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:49:21,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2020-09-25 06:49:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2217. [2020-09-25 06:49:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2020-09-25 06:49:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2678 transitions. [2020-09-25 06:49:21,987 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2678 transitions. Word has length 120 [2020-09-25 06:49:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:21,988 INFO L479 AbstractCegarLoop]: Abstraction has 2217 states and 2678 transitions. [2020-09-25 06:49:21,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2678 transitions. [2020-09-25 06:49:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 06:49:21,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:21,993 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:49:21,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:49:21,994 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:21,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:21,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1403558871, now seen corresponding path program 1 times [2020-09-25 06:49:21,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:21,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56305146] [2020-09-25 06:49:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:22,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:22,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:22,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:22,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:22,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:23,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:26,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:26,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 06:49:26,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:49:26,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4284 [2020-09-25 06:49:26,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:26,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:26,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 06:49:26,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:49:26,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:26,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:26,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:26,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:49:26,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:26,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:49:26,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:26,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:26,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:26,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:26,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:26,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:49:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:26,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:26,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:26,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 06:49:26,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 06:49:26,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:26,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:26,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 06:49:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:26,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56305146] [2020-09-25 06:49:26,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:26,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:49:26,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083720194] [2020-09-25 06:49:26,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:49:26,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:26,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:49:26,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:49:26,676 INFO L87 Difference]: Start difference. First operand 2217 states and 2678 transitions. Second operand 5 states. [2020-09-25 06:49:30,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:30,227 INFO L93 Difference]: Finished difference Result 4837 states and 5911 transitions. [2020-09-25 06:49:30,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:49:30,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 06:49:30,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:30,252 INFO L225 Difference]: With dead ends: 4837 [2020-09-25 06:49:30,252 INFO L226 Difference]: Without dead ends: 3038 [2020-09-25 06:49:30,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:49:30,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2020-09-25 06:49:30,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2626. [2020-09-25 06:49:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2626 states. [2020-09-25 06:49:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 3216 transitions. [2020-09-25 06:49:30,349 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 3216 transitions. Word has length 159 [2020-09-25 06:49:30,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:30,349 INFO L479 AbstractCegarLoop]: Abstraction has 2626 states and 3216 transitions. [2020-09-25 06:49:30,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:49:30,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 3216 transitions. [2020-09-25 06:49:30,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 06:49:30,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:30,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:49:30,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:49:30,353 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:30,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:30,354 INFO L82 PathProgramCache]: Analyzing trace with hash -157424678, now seen corresponding path program 1 times [2020-09-25 06:49:30,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:30,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91543550] [2020-09-25 06:49:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:30,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:30,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:30,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:30,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:32,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:32,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 06:49:32,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:49:32,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2162 [2020-09-25 06:49:32,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:32,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 06:49:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:49:32,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:32,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:32,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:32,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:49:32,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:32,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:49:32,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:32,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:32,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:32,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:49:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking...