/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:03:01,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:03:01,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:03:01,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:03:01,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:03:01,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:03:01,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:03:01,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:03:01,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:03:01,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:03:01,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:03:01,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:03:01,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:03:01,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:03:01,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:03:01,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:03:01,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:03:01,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:03:01,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:03:01,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:03:01,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:03:01,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:03:01,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:03:01,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:03:01,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:03:01,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:03:01,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:03:01,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:03:01,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:03:01,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:03:01,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:03:01,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:03:01,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:03:01,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:03:01,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:03:01,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:03:01,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:03:01,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:03:01,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:03:01,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:03:01,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:03:01,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:03:01,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:03:01,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:03:01,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:03:01,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:03:01,351 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:03:01,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:03:01,351 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:03:01,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:03:01,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:03:01,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:03:01,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:03:01,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:03:01,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:03:01,353 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:03:01,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:03:01,353 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:03:01,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:03:01,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:03:01,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:03:01,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:03:01,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:03:01,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:03:01,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:03:01,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:03:01,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:03:01,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:03:01,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:03:01,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:03:01,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:03:01,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:03:01,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:03:01,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:03:01,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:03:01,884 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:03:01,884 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:03:01,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label31.c [2020-09-25 09:03:01,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e0578d1d/ca40d72b2ef44f149972f00c46019a85/FLAG5bb064e67 [2020-09-25 09:03:02,623 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:03:02,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label31.c [2020-09-25 09:03:02,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e0578d1d/ca40d72b2ef44f149972f00c46019a85/FLAG5bb064e67 [2020-09-25 09:03:02,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e0578d1d/ca40d72b2ef44f149972f00c46019a85 [2020-09-25 09:03:02,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:03:02,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:03:02,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:02,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:03:02,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:03:02,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:02" (1/1) ... [2020-09-25 09:03:02,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25dd80d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:02, skipping insertion in model container [2020-09-25 09:03:02,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:02" (1/1) ... [2020-09-25 09:03:02,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:03:02,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:03:03,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:03,621 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:03:03,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:03,787 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:03:03,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:03 WrapperNode [2020-09-25 09:03:03,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:03,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:03:03,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:03:03,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:03:03,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:03" (1/1) ... [2020-09-25 09:03:03,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:03" (1/1) ... [2020-09-25 09:03:03,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:03" (1/1) ... [2020-09-25 09:03:03,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:03" (1/1) ... [2020-09-25 09:03:03,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:03" (1/1) ... [2020-09-25 09:03:03,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:03" (1/1) ... [2020-09-25 09:03:03,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:03" (1/1) ... [2020-09-25 09:03:03,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:03:03,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:03:03,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:03:03,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:03:03,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:03:04,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:03:04,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:03:04,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:03:04,027 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:03:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:03:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:03:04,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:03:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:03:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:03:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:03:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:03:05,425 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:03:05,426 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:03:05,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:05 BoogieIcfgContainer [2020-09-25 09:03:05,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:03:05,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:03:05,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:03:05,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:03:05,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:03:02" (1/3) ... [2020-09-25 09:03:05,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce348e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:05, skipping insertion in model container [2020-09-25 09:03:05,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:03" (2/3) ... [2020-09-25 09:03:05,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce348e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:05, skipping insertion in model container [2020-09-25 09:03:05,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:05" (3/3) ... [2020-09-25 09:03:05,447 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label31.c [2020-09-25 09:03:05,459 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:03:05,471 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:03:05,497 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:03:05,544 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:03:05,546 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:03:05,546 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:03:05,546 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:03:05,546 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:03:05,547 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:03:05,547 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:03:05,547 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:03:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:03:05,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 09:03:05,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:05,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:05,622 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:05,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:05,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1921303583, now seen corresponding path program 1 times [2020-09-25 09:03:05,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:05,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208776898] [2020-09-25 09:03:05,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:06,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:07,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:07,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:07,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:08,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:08,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:08,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:09,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:09,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:10,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:10,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 09:03:10,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:03:10,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:03:10,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:10,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:10,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:03:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 09:03:10,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:03:11,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:11,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:11,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:11,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:11,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:11,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 09:03:11,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:11,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:03:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:03:11,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208776898] [2020-09-25 09:03:11,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:03:11,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:03:11,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418590685] [2020-09-25 09:03:11,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:03:11,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:11,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:03:11,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:03:11,362 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:03:13,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:13,723 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 09:03:13,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:03:13,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-25 09:03:13,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:13,775 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 09:03:13,776 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 09:03:13,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:13,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 09:03:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 09:03:13,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 09:03:13,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 09:03:13,905 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 142 [2020-09-25 09:03:13,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:13,906 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 09:03:13,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:03:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 09:03:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 09:03:13,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:13,914 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:13,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:03:13,915 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:13,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:13,915 INFO L82 PathProgramCache]: Analyzing trace with hash -377236683, now seen corresponding path program 1 times [2020-09-25 09:03:13,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:13,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453393183] [2020-09-25 09:03:13,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:14,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:14,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:14,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:15,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:16,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:17,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:18,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:18,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:18,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:18,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 09:03:18,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 09:03:18,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 09:03:18,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:18,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:03:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:03:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 09:03:18,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:19,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:19,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:19,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:19,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:19,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:19,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:03:19,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:19,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:19,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:03:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:03:19,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:19,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:19,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:19,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:19,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:03:19,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:03:19,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 09:03:19,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:19,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:03:19,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:03:19,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:03:19,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453393183] [2020-09-25 09:03:19,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:19,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:03:19,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020116773] [2020-09-25 09:03:19,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:03:19,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:19,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:03:19,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:03:19,412 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 6 states. [2020-09-25 09:03:21,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:21,372 INFO L93 Difference]: Finished difference Result 1636 states and 2116 transitions. [2020-09-25 09:03:21,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:03:21,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-25 09:03:21,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:21,385 INFO L225 Difference]: With dead ends: 1636 [2020-09-25 09:03:21,386 INFO L226 Difference]: Without dead ends: 999 [2020-09-25 09:03:21,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:03:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-09-25 09:03:21,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 969. [2020-09-25 09:03:21,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-09-25 09:03:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1222 transitions. [2020-09-25 09:03:21,447 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1222 transitions. Word has length 160 [2020-09-25 09:03:21,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:21,448 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1222 transitions. [2020-09-25 09:03:21,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:03:21,448 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1222 transitions. [2020-09-25 09:03:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 09:03:21,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:21,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:21,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:03:21,455 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:21,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:21,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1780505174, now seen corresponding path program 1 times [2020-09-25 09:03:21,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:21,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016406734] [2020-09-25 09:03:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:21,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:21,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:22,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:23,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:23,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:25,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:26,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:26,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 09:03:26,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:03:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 09:03:26,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:26,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:03:26,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 09:03:26,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:26,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:26,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:26,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:26,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:26,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:03:26,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:26,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:26,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:03:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:26,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:26,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:26,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:26,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:03:26,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:26,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 09:03:26,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:26,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:26,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:26,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:03:26,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 09:03:26,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:26,877 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 09:03:26,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016406734] [2020-09-25 09:03:26,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:03:26,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:03:26,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132824776] [2020-09-25 09:03:26,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:03:26,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:26,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:03:26,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:03:26,886 INFO L87 Difference]: Start difference. First operand 969 states and 1222 transitions. Second operand 8 states. [2020-09-25 09:03:30,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:30,141 INFO L93 Difference]: Finished difference Result 3381 states and 4573 transitions. [2020-09-25 09:03:30,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:03:30,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 186 [2020-09-25 09:03:30,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:30,156 INFO L225 Difference]: With dead ends: 3381 [2020-09-25 09:03:30,156 INFO L226 Difference]: Without dead ends: 2434 [2020-09-25 09:03:30,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:03:30,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2020-09-25 09:03:30,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2335. [2020-09-25 09:03:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2335 states. [2020-09-25 09:03:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3035 transitions. [2020-09-25 09:03:30,253 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3035 transitions. Word has length 186 [2020-09-25 09:03:30,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:30,254 INFO L479 AbstractCegarLoop]: Abstraction has 2335 states and 3035 transitions. [2020-09-25 09:03:30,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:03:30,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3035 transitions. [2020-09-25 09:03:30,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 09:03:30,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:30,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:30,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:03:30,269 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:30,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:30,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2143519476, now seen corresponding path program 1 times [2020-09-25 09:03:30,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:30,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283215265] [2020-09-25 09:03:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:30,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:30,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:30,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:30,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:31,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:31,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:35,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:35,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 09:03:35,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:35,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 09:03:35,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:35,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:03:35,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 09:03:35,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 09:03:35,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:35,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:35,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:35,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:35,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:35,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:35,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:03:35,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:35,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:35,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:35,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:35,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:35,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:03:35,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:35,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:35,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:35,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:03:35,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:35,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:03:35,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:35,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:35,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:35,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:35,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:35,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:03:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:35,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:35,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:35,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:03:35,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:35,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 09:03:35,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:35,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:35,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:03:35,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:03:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:35,882 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 09:03:35,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283215265] [2020-09-25 09:03:35,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:35,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:03:35,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925608408] [2020-09-25 09:03:35,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:03:35,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:35,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:03:35,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:03:35,886 INFO L87 Difference]: Start difference. First operand 2335 states and 3035 transitions. Second operand 8 states. [2020-09-25 09:03:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:39,075 INFO L93 Difference]: Finished difference Result 6926 states and 9413 transitions. [2020-09-25 09:03:39,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:03:39,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2020-09-25 09:03:39,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:39,100 INFO L225 Difference]: With dead ends: 6926 [2020-09-25 09:03:39,101 INFO L226 Difference]: Without dead ends: 4427 [2020-09-25 09:03:39,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:03:39,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2020-09-25 09:03:39,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4208. [2020-09-25 09:03:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4208 states. [2020-09-25 09:03:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4208 states to 4208 states and 5332 transitions. [2020-09-25 09:03:39,313 INFO L78 Accepts]: Start accepts. Automaton has 4208 states and 5332 transitions. Word has length 198 [2020-09-25 09:03:39,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:39,314 INFO L479 AbstractCegarLoop]: Abstraction has 4208 states and 5332 transitions. [2020-09-25 09:03:39,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:03:39,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4208 states and 5332 transitions. [2020-09-25 09:03:39,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-25 09:03:39,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:39,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:39,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:03:39,332 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:39,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:39,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1788768514, now seen corresponding path program 1 times [2020-09-25 09:03:39,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:39,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509237849] [2020-09-25 09:03:39,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:39,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:39,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:42,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:44,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:44,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 09:03:44,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:03:44,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 09:03:44,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:44,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 09:03:44,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-09-25 09:03:44,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:44,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:44,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:44,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:44,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:44,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:44,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:03:44,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:44,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:44,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:03:44,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:44,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:44,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:44,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:03:44,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:44,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:03:44,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:44,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:44,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:44,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:03:44,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:03:44,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:03:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:44,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:44,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:44,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:03:44,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:03:44,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 09:03:44,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:44,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:44,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:03:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 09:03:44,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:03:44,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509237849] [2020-09-25 09:03:44,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:44,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:03:44,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922053536] [2020-09-25 09:03:44,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:03:44,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:44,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:03:44,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:03:44,786 INFO L87 Difference]: Start difference. First operand 4208 states and 5332 transitions. Second operand 6 states. [2020-09-25 09:03:46,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:46,646 INFO L93 Difference]: Finished difference Result 6978 states and 8958 transitions. [2020-09-25 09:03:46,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:03:46,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2020-09-25 09:03:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:46,661 INFO L225 Difference]: With dead ends: 6978 [2020-09-25 09:03:46,661 INFO L226 Difference]: Without dead ends: 2632 [2020-09-25 09:03:46,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:03:46,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2020-09-25 09:03:46,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2206. [2020-09-25 09:03:46,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2206 states. [2020-09-25 09:03:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 2633 transitions. [2020-09-25 09:03:46,745 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 2633 transitions. Word has length 204 [2020-09-25 09:03:46,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:46,746 INFO L479 AbstractCegarLoop]: Abstraction has 2206 states and 2633 transitions. [2020-09-25 09:03:46,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:03:46,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 2633 transitions. [2020-09-25 09:03:46,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 09:03:46,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:46,755 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:46,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:03:46,755 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:46,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:46,755 INFO L82 PathProgramCache]: Analyzing trace with hash -464116220, now seen corresponding path program 1 times [2020-09-25 09:03:46,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:46,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913140330] [2020-09-25 09:03:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:46,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:46,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:47,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:47,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:48,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:50,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking...