/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/Problem02_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:55:16,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:55:16,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:55:16,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:55:16,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:55:16,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:55:16,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:55:16,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:55:16,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:55:16,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:55:16,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:55:16,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:55:16,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:55:16,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:55:16,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:55:16,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:55:16,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:55:16,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:55:16,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:55:16,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:55:16,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:55:16,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:55:16,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:55:16,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:55:16,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:55:16,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:55:16,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:55:16,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:55:16,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:55:16,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:55:16,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:55:16,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:55:16,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:55:16,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:55:16,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:55:16,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:55:16,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:55:16,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:55:16,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:55:16,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:55:16,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:55:16,353 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 07:55:16,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:55:16,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:55:16,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:55:16,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:55:16,403 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:55:16,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:55:16,404 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:55:16,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:55:16,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:55:16,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:55:16,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:55:16,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:55:16,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:55:16,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:55:16,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:55:16,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:55:16,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:55:16,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:55:16,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:55:16,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:55:16,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:55:16,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:55:16,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:55:16,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:55:16,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:55:16,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:55:16,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:55:16,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:55:16,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:55:16,410 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 07:55:16,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:55:16,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:55:16,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:55:16,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:55:16,895 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:55:16,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 07:55:16,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5408e35ce/c6e32f7768ce4eb7adca3b82630f7b0d/FLAG36b75a124 [2020-09-25 07:55:17,587 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:55:17,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 07:55:17,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5408e35ce/c6e32f7768ce4eb7adca3b82630f7b0d/FLAG36b75a124 [2020-09-25 07:55:17,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5408e35ce/c6e32f7768ce4eb7adca3b82630f7b0d [2020-09-25 07:55:17,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:55:17,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:55:17,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:17,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:55:17,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:55:17,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:17" (1/1) ... [2020-09-25 07:55:17,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:17, skipping insertion in model container [2020-09-25 07:55:17,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:17" (1/1) ... [2020-09-25 07:55:17,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:55:17,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:55:18,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:18,522 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:55:18,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:18,769 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:55:18,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:18 WrapperNode [2020-09-25 07:55:18,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:18,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:55:18,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:55:18,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:55:18,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:18" (1/1) ... [2020-09-25 07:55:18,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:18" (1/1) ... [2020-09-25 07:55:18,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:18" (1/1) ... [2020-09-25 07:55:18,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:18" (1/1) ... [2020-09-25 07:55:18,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:18" (1/1) ... [2020-09-25 07:55:18,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:18" (1/1) ... [2020-09-25 07:55:18,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:18" (1/1) ... [2020-09-25 07:55:18,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:55:18,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:55:18,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:55:18,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:55:18,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:18" (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 07:55:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:55:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:55:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:55:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:55:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:55:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:55:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:55:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:55:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:55:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:55:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:55:20,295 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:55:20,296 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:55:20,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:20 BoogieIcfgContainer [2020-09-25 07:55:20,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:55:20,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:55:20,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:55:20,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:55:20,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:55:17" (1/3) ... [2020-09-25 07:55:20,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:20, skipping insertion in model container [2020-09-25 07:55:20,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:18" (2/3) ... [2020-09-25 07:55:20,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:20, skipping insertion in model container [2020-09-25 07:55:20,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:20" (3/3) ... [2020-09-25 07:55:20,316 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label55.c [2020-09-25 07:55:20,329 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:55:20,343 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:55:20,366 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:55:20,403 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:55:20,403 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:55:20,404 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:55:20,404 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:55:20,404 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:55:20,404 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:55:20,404 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:55:20,405 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:55:20,436 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:55:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 07:55:20,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:20,464 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] [2020-09-25 07:55:20,465 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:20,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1120036286, now seen corresponding path program 1 times [2020-09-25 07:55:20,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:20,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 07:55:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:20,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:21,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:21,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:21,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:23,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:23,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:24,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:24,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:25,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:25,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:25,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:25,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 07:55:25,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:55:25,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 07:55:25,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:25,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:25,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:25,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:55:25,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 07:55:25,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:55:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:26,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:26,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:26,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 07:55:26,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:26,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:55:26,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:26,176 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 07:55:26,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 07:55:26,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:26,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:55:26,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483188727] [2020-09-25 07:55:26,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:55:26,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:26,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:55:26,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:55:26,217 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:55:28,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:28,838 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 07:55:28,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:55:28,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 07:55:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:28,891 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 07:55:28,892 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 07:55:28,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:28,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 07:55:29,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 07:55:29,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 07:55:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 07:55:29,092 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 131 [2020-09-25 07:55:29,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:29,096 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 07:55:29,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:55:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 07:55:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 07:55:29,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:29,115 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] [2020-09-25 07:55:29,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:55:29,115 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:29,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:29,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1110069102, now seen corresponding path program 1 times [2020-09-25 07:55:29,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:29,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094594556] [2020-09-25 07:55:29,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:29,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:29,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:29,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:29,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:32,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:32,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:34,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 07:55:34,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:55:34,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:55:34,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:34,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:55:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 07:55:34,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:34,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:34,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:34,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:34,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:55:34,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:34,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:34,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:34,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:34,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:34,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:34,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:34,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:34,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:34,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:55:34,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:34,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:55:34,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:34,493 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 07:55:34,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094594556] [2020-09-25 07:55:34,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:34,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:34,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550182630] [2020-09-25 07:55:34,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:34,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:34,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:34,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:34,497 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 07:55:36,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:36,196 INFO L93 Difference]: Finished difference Result 1622 states and 2084 transitions. [2020-09-25 07:55:36,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:36,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 07:55:36,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:36,207 INFO L225 Difference]: With dead ends: 1622 [2020-09-25 07:55:36,207 INFO L226 Difference]: Without dead ends: 979 [2020-09-25 07:55:36,211 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 07:55:36,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-09-25 07:55:36,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 967. [2020-09-25 07:55:36,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-09-25 07:55:36,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1216 transitions. [2020-09-25 07:55:36,246 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1216 transitions. Word has length 149 [2020-09-25 07:55:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:36,248 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1216 transitions. [2020-09-25 07:55:36,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:36,248 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1216 transitions. [2020-09-25 07:55:36,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 07:55:36,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:36,254 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:36,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:55:36,255 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:36,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1319537639, now seen corresponding path program 1 times [2020-09-25 07:55:36,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:36,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518179999] [2020-09-25 07:55:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:36,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:36,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:36,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:37,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:37,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:39,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:39,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:41,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 07:55:41,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:55:41,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:55:41,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:41,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:41,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:55:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 07:55:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:41,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:41,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:41,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:41,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:55:41,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:41,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:41,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:41,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:55:41,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:55:41,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:41,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 07:55:41,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:41,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 07:55:41,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:41,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 07:55:41,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:41,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518179999] [2020-09-25 07:55:41,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:41,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:55:41,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140948281] [2020-09-25 07:55:41,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:41,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:41,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:41,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:41,681 INFO L87 Difference]: Start difference. First operand 967 states and 1216 transitions. Second operand 7 states. [2020-09-25 07:55:44,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:44,462 INFO L93 Difference]: Finished difference Result 2787 states and 3661 transitions. [2020-09-25 07:55:44,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:55:44,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 07:55:44,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:44,483 INFO L225 Difference]: With dead ends: 2787 [2020-09-25 07:55:44,484 INFO L226 Difference]: Without dead ends: 1842 [2020-09-25 07:55:44,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:44,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2020-09-25 07:55:44,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1737. [2020-09-25 07:55:44,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1737 states. [2020-09-25 07:55:44,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2209 transitions. [2020-09-25 07:55:44,597 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2209 transitions. Word has length 175 [2020-09-25 07:55:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:44,598 INFO L479 AbstractCegarLoop]: Abstraction has 1737 states and 2209 transitions. [2020-09-25 07:55:44,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2209 transitions. [2020-09-25 07:55:44,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 07:55:44,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:44,607 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:55:44,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:55:44,607 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:44,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:44,608 INFO L82 PathProgramCache]: Analyzing trace with hash 335216911, now seen corresponding path program 1 times [2020-09-25 07:55:44,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:44,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523239367] [2020-09-25 07:55:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:44,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:44,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:49,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:49,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 07:55:49,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:55:49,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 07:55:49,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:49,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:55:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 07:55:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 07:55:49,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:49,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:49,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:49,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:49,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:49,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:49,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:49,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:49,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:49,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:49,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:49,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:49,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:55:49,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:49,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:49,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:49,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:55:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:50,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:50,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:55:50,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 07:55:50,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:50,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:55:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:50,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:55:50,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 07:55:50,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523239367] [2020-09-25 07:55:50,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:50,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:55:50,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215618937] [2020-09-25 07:55:50,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:55:50,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:50,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:55:50,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:55:50,331 INFO L87 Difference]: Start difference. First operand 1737 states and 2209 transitions. Second operand 9 states. [2020-09-25 07:55:54,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:54,414 INFO L93 Difference]: Finished difference Result 5604 states and 7603 transitions. [2020-09-25 07:55:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:55:54,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2020-09-25 07:55:54,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:54,437 INFO L225 Difference]: With dead ends: 5604 [2020-09-25 07:55:54,438 INFO L226 Difference]: Without dead ends: 3703 [2020-09-25 07:55:54,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:54,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2020-09-25 07:55:54,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3635. [2020-09-25 07:55:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3635 states. [2020-09-25 07:55:54,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 4519 transitions. [2020-09-25 07:55:54,559 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 4519 transitions. Word has length 187 [2020-09-25 07:55:54,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:54,559 INFO L479 AbstractCegarLoop]: Abstraction has 3635 states and 4519 transitions. [2020-09-25 07:55:54,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:55:54,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 4519 transitions. [2020-09-25 07:55:54,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 07:55:54,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:54,572 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:54,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:54,573 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:54,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:54,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1049880763, now seen corresponding path program 1 times [2020-09-25 07:55:54,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:54,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362076325] [2020-09-25 07:55:54,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:54,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:54,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:55,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:55,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:55,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:56,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:59,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:59,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 07:55:59,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:55:59,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:55:59,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:59,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 07:55:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 07:55:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:59,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:59,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:59,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:59,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:59,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:59,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:59,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:59,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:59,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:59,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:59,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:59,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:59,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:59,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:55:59,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:59,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:59,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:59,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:59,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:55:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:59,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:59,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:59,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 07:55:59,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:59,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 07:55:59,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:59,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:59,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:59,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:59,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:55:59,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 07:55:59,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362076325] [2020-09-25 07:55:59,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:59,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:59,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155784843] [2020-09-25 07:55:59,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:59,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:59,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:59,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:59,864 INFO L87 Difference]: Start difference. First operand 3635 states and 4519 transitions. Second operand 5 states. [2020-09-25 07:56:01,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:01,950 INFO L93 Difference]: Finished difference Result 9455 states and 12163 transitions. [2020-09-25 07:56:01,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:56:01,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-09-25 07:56:01,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:01,981 INFO L225 Difference]: With dead ends: 9455 [2020-09-25 07:56:01,981 INFO L226 Difference]: Without dead ends: 5842 [2020-09-25 07:56:01,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 07:56:02,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5842 states. [2020-09-25 07:56:02,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5842 to 5763. [2020-09-25 07:56:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5763 states. [2020-09-25 07:56:02,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5763 states to 5763 states and 7052 transitions. [2020-09-25 07:56:02,205 INFO L78 Accepts]: Start accepts. Automaton has 5763 states and 7052 transitions. Word has length 193 [2020-09-25 07:56:02,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:02,207 INFO L479 AbstractCegarLoop]: Abstraction has 5763 states and 7052 transitions. [2020-09-25 07:56:02,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:56:02,207 INFO L276 IsEmpty]: Start isEmpty. Operand 5763 states and 7052 transitions. [2020-09-25 07:56:02,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 07:56:02,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:02,238 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:02,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:02,239 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:02,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:02,239 INFO L82 PathProgramCache]: Analyzing trace with hash 952535934, now seen corresponding path program 1 times [2020-09-25 07:56:02,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:02,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78605900] [2020-09-25 07:56:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:02,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:05,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking...