/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:20:19,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:20:19,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:20:19,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:20:19,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:20:19,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:20:19,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:20:19,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:20:19,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:20:19,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:20:19,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:20:19,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:20:19,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:20:19,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:20:19,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:20:19,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:20:19,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:20:19,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:20:19,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:20:19,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:20:19,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:20:19,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:20:19,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:20:19,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:20:19,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:20:19,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:20:19,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:20:19,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:20:19,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:20:19,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:20:19,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:20:19,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:20:19,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:20:19,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:20:19,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:20:19,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:20:19,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:20:19,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:20:19,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:20:19,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:20:19,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:20:19,898 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 [2020-09-24 18:20:19,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:20:19,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:20:19,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:20:19,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:20:19,946 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:20:19,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:20:19,947 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:20:19,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:20:19,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:20:19,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:20:19,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:20:19,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:20:19,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:20:19,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:20:19,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:20:19,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:20:19,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:20:19,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:20:19,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:20:19,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:20:19,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:20:19,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:20:19,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:20:19,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:20:19,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:20:19,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:20:19,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:20:19,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:20:19,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:20:19,953 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:20:20,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:20:20,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:20:20,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:20:20,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:20:20,428 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:20:20,430 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-24 18:20:20,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4c5f9abb/78737c1732d8473586869370bbe3dd57/FLAG297b67a30 [2020-09-24 18:20:21,230 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:20:21,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-24 18:20:21,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4c5f9abb/78737c1732d8473586869370bbe3dd57/FLAG297b67a30 [2020-09-24 18:20:21,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4c5f9abb/78737c1732d8473586869370bbe3dd57 [2020-09-24 18:20:21,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:20:21,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:20:21,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:21,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:20:21,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:20:21,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:21" (1/1) ... [2020-09-24 18:20:21,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5211d524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:21, skipping insertion in model container [2020-09-24 18:20:21,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:21" (1/1) ... [2020-09-24 18:20:21,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:20:21,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:20:22,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:22,241 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:20:22,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:22,394 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:20:22,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:22 WrapperNode [2020-09-24 18:20:22,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:22,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:20:22,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:20:22,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:20:22,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:22" (1/1) ... [2020-09-24 18:20:22,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:22" (1/1) ... [2020-09-24 18:20:22,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:22" (1/1) ... [2020-09-24 18:20:22,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:22" (1/1) ... [2020-09-24 18:20:22,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:22" (1/1) ... [2020-09-24 18:20:22,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:22" (1/1) ... [2020-09-24 18:20:22,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:22" (1/1) ... [2020-09-24 18:20:22,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:20:22,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:20:22,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:20:22,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:20:22,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:22" (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 [2020-09-24 18:20:22,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:20:22,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:20:22,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:20:22,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:20:22,599 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:20:22,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:20:22,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:20:22,600 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:20:22,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:20:22,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:20:22,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:20:24,007 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:20:24,007 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:20:24,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:24 BoogieIcfgContainer [2020-09-24 18:20:24,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:20:24,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:20:24,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:20:24,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:20:24,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:20:21" (1/3) ... [2020-09-24 18:20:24,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448afc1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:24, skipping insertion in model container [2020-09-24 18:20:24,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:22" (2/3) ... [2020-09-24 18:20:24,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448afc1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:24, skipping insertion in model container [2020-09-24 18:20:24,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:24" (3/3) ... [2020-09-24 18:20:24,028 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label43.c [2020-09-24 18:20:24,041 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:20:24,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:20:24,075 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:20:24,114 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:20:24,115 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:20:24,115 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:20:24,115 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:20:24,115 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:20:24,115 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:20:24,116 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:20:24,116 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:20:24,155 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:20:24,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 18:20:24,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:24,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:24,186 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:24,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:24,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1333625535, now seen corresponding path program 1 times [2020-09-24 18:20:24,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:24,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786212473] [2020-09-24 18:20:24,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:24,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:24,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:25,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:27,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:29,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 18:20:29,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:20:29,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 18:20:29,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:20:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-24 18:20:29,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 18:20:29,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:29,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:29,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:29,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:29,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:20:29,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:20:29,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:29,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786212473] [2020-09-24 18:20:29,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:29,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:20:29,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010181565] [2020-09-24 18:20:29,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:29,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:29,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:29,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:29,981 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-24 18:20:32,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:32,998 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-24 18:20:32,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:20:33,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-24 18:20:33,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:33,043 INFO L225 Difference]: With dead ends: 1360 [2020-09-24 18:20:33,044 INFO L226 Difference]: Without dead ends: 781 [2020-09-24 18:20:33,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-24 18:20:33,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-24 18:20:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-24 18:20:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-24 18:20:33,188 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 156 [2020-09-24 18:20:33,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:33,190 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-24 18:20:33,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:33,190 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-24 18:20:33,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 18:20:33,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:33,200 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:33,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:20:33,201 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:33,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:33,201 INFO L82 PathProgramCache]: Analyzing trace with hash 2141714320, now seen corresponding path program 1 times [2020-09-24 18:20:33,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:33,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600439549] [2020-09-24 18:20:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:33,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:33,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:34,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:34,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:34,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:38,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:38,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 18:20:38,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:20:38,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-24 18:20:38,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:20:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:20:38,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:38,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:38,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:38,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:38,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:38,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:20:38,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:20:38,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:38,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:38,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:38,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:38,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:38,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:38,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 18:20:38,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:20:38,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:38,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600439549] [2020-09-24 18:20:38,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:38,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:20:38,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591396189] [2020-09-24 18:20:38,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:20:38,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:38,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:20:38,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:20:38,585 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 8 states. [2020-09-24 18:20:41,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:41,164 INFO L93 Difference]: Finished difference Result 1887 states and 2410 transitions. [2020-09-24 18:20:41,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:20:41,165 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 177 [2020-09-24 18:20:41,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:41,175 INFO L225 Difference]: With dead ends: 1887 [2020-09-24 18:20:41,175 INFO L226 Difference]: Without dead ends: 1165 [2020-09-24 18:20:41,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:20:41,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2020-09-24 18:20:41,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1038. [2020-09-24 18:20:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-09-24 18:20:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1316 transitions. [2020-09-24 18:20:41,237 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1316 transitions. Word has length 177 [2020-09-24 18:20:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:41,238 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1316 transitions. [2020-09-24 18:20:41,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:20:41,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1316 transitions. [2020-09-24 18:20:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-24 18:20:41,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:41,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:41,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:20:41,246 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:41,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:41,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1186951690, now seen corresponding path program 1 times [2020-09-24 18:20:41,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:41,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628760513] [2020-09-24 18:20:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:41,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:41,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:42,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:46,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-24 18:20:46,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:20:46,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:20:46,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:20:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:20:46,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:46,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:46,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:46,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:46,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:46,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:20:46,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:46,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:46,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:46,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:46,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:46,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:46,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:20:46,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:46,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:20:46,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:46,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:20:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:46,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:46,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:20:46,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:46,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 18:20:46,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:46,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:46,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:46,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:20:46,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:46,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628760513] [2020-09-24 18:20:46,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:46,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:46,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462994144] [2020-09-24 18:20:46,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:46,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:46,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:46,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:46,665 INFO L87 Difference]: Start difference. First operand 1038 states and 1316 transitions. Second operand 7 states. [2020-09-24 18:20:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:48,922 INFO L93 Difference]: Finished difference Result 2440 states and 3203 transitions. [2020-09-24 18:20:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:20:48,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-09-24 18:20:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:48,939 INFO L225 Difference]: With dead ends: 2440 [2020-09-24 18:20:48,944 INFO L226 Difference]: Without dead ends: 1426 [2020-09-24 18:20:48,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:20:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2020-09-24 18:20:49,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1224. [2020-09-24 18:20:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1224 states. [2020-09-24 18:20:49,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1564 transitions. [2020-09-24 18:20:49,037 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1564 transitions. Word has length 210 [2020-09-24 18:20:49,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:49,040 INFO L479 AbstractCegarLoop]: Abstraction has 1224 states and 1564 transitions. [2020-09-24 18:20:49,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:49,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1564 transitions. [2020-09-24 18:20:49,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-24 18:20:49,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:49,050 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:49,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:20:49,060 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:49,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:49,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1833978793, now seen corresponding path program 1 times [2020-09-24 18:20:49,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:49,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70312400] [2020-09-24 18:20:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:49,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:49,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:50,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:50,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:51,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:54,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:54,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-24 18:20:54,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:20:54,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 18:20:54,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:20:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:20:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 18:20:54,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:54,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:54,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:54,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:54,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:54,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:54,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:20:54,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:54,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:54,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:54,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:54,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:20:54,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 18:20:54,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:20:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:20:54,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:54,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:20:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:54,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:54,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:20:54,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:54,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 18:20:54,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:54,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:54,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:20:54,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:54,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70312400] [2020-09-24 18:20:54,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:54,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:20:54,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495837000] [2020-09-24 18:20:54,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:20:54,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:54,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:20:54,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:20:54,618 INFO L87 Difference]: Start difference. First operand 1224 states and 1564 transitions. Second operand 8 states. [2020-09-24 18:20:55,393 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-24 18:20:58,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:58,275 INFO L93 Difference]: Finished difference Result 3570 states and 4762 transitions. [2020-09-24 18:20:58,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 18:20:58,282 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-09-24 18:20:58,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:58,303 INFO L225 Difference]: With dead ends: 3570 [2020-09-24 18:20:58,303 INFO L226 Difference]: Without dead ends: 2370 [2020-09-24 18:20:58,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:20:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2020-09-24 18:20:58,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 1703. [2020-09-24 18:20:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1703 states. [2020-09-24 18:20:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2166 transitions. [2020-09-24 18:20:58,388 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2166 transitions. Word has length 217 [2020-09-24 18:20:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:58,389 INFO L479 AbstractCegarLoop]: Abstraction has 1703 states and 2166 transitions. [2020-09-24 18:20:58,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:20:58,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2166 transitions. [2020-09-24 18:20:58,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-24 18:20:58,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:58,400 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 18:20:58,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:20:58,400 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:58,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:58,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1298220205, now seen corresponding path program 1 times [2020-09-24 18:20:58,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:58,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951140067] [2020-09-24 18:20:58,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:58,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:58,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:59,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:00,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:00,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:03,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-24 18:21:03,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:21:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-24 18:21:03,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:21:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:21:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:03,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:03,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:03,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:03,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:21:03,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:21:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:03,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:03,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:03,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:21:03,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:03,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 18:21:03,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:21:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:03,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:21:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:03,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:21:03,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:03,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:21:03,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 18:21:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:03,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:03,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-24 18:21:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:03,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:03,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:21:03,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:03,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:21:03,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:03,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:03,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 18:21:03,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:03,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 20 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-09-24 18:21:03,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951140067] [2020-09-24 18:21:03,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:03,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:21:03,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225907298] [2020-09-24 18:21:03,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:21:03,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:03,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:21:03,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:21:03,912 INFO L87 Difference]: Start difference. First operand 1703 states and 2166 transitions. Second operand 8 states. [2020-09-24 18:21:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:06,211 INFO L93 Difference]: Finished difference Result 4043 states and 5212 transitions. [2020-09-24 18:21:06,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:21:06,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 255 [2020-09-24 18:21:06,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:06,226 INFO L225 Difference]: With dead ends: 4043 [2020-09-24 18:21:06,227 INFO L226 Difference]: Without dead ends: 2364 [2020-09-24 18:21:06,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:21:06,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2020-09-24 18:21:06,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2304. [2020-09-24 18:21:06,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2304 states. [2020-09-24 18:21:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 2921 transitions. [2020-09-24 18:21:06,333 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 2921 transitions. Word has length 255 [2020-09-24 18:21:06,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:06,333 INFO L479 AbstractCegarLoop]: Abstraction has 2304 states and 2921 transitions. [2020-09-24 18:21:06,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:21:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 2921 transitions. [2020-09-24 18:21:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-09-24 18:21:06,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:06,347 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:06,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:21:06,348 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:06,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:06,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1056285950, now seen corresponding path program 1 times [2020-09-24 18:21:06,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:06,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553639723] [2020-09-24 18:21:06,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:06,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:06,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:06,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:07,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:08,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking...