/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 SequenceOfStatements --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:44:03,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:44:03,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:44:03,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:44:03,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:44:03,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:44:03,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:44:03,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:44:03,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:44:03,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:44:03,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:44:03,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:44:03,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:44:03,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:44:03,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:44:03,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:44:03,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:44:03,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:44:03,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:44:03,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:44:03,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:44:03,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:44:03,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:44:03,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:44:03,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:44:03,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:44:03,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:44:03,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:44:03,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:44:03,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:44:03,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:44:03,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:44:03,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:44:03,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:44:03,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:44:03,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:44:03,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:44:03,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:44:03,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:44:03,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:44:03,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:44:03,988 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 [2020-10-14 23:44:04,026 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:44:04,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:44:04,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:44:04,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:44:04,028 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:44:04,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:44:04,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:44:04,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:44:04,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:44:04,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:44:04,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:44:04,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:44:04,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:44:04,031 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:44:04,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:44:04,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:44:04,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:44:04,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:44:04,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:44:04,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:44:04,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:44:04,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:44:04,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:44:04,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:44:04,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:44:04,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:44:04,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:44:04,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:44:04,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:44:04,034 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 -> SequenceOfStatements 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:44:04,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:44:04,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:44:04,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:44:04,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:44:04,377 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:44:04,378 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_7.c [2020-10-14 23:44:04,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2e3bbf9b/9a3039e3176a441387f14de5ab48be0a/FLAG65f1a41f1 [2020-10-14 23:44:04,873 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:44:04,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_7.c [2020-10-14 23:44:04,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2e3bbf9b/9a3039e3176a441387f14de5ab48be0a/FLAG65f1a41f1 [2020-10-14 23:44:05,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2e3bbf9b/9a3039e3176a441387f14de5ab48be0a [2020-10-14 23:44:05,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:44:05,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:44:05,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:44:05,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:44:05,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:44:05,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:05" (1/1) ... [2020-10-14 23:44:05,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256ae262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:05, skipping insertion in model container [2020-10-14 23:44:05,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:05" (1/1) ... [2020-10-14 23:44:05,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:44:05,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:44:05,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:44:05,456 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:44:05,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:44:05,491 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:44:05,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:05 WrapperNode [2020-10-14 23:44:05,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:44:05,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:44:05,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:44:05,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:44:05,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:05" (1/1) ... [2020-10-14 23:44:05,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:05" (1/1) ... [2020-10-14 23:44:05,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:05" (1/1) ... [2020-10-14 23:44:05,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:05" (1/1) ... [2020-10-14 23:44:05,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:05" (1/1) ... [2020-10-14 23:44:05,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:05" (1/1) ... [2020-10-14 23:44:05,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:05" (1/1) ... [2020-10-14 23:44:05,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:44:05,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:44:05,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:44:05,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:44:05,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:05" (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 [2020-10-14 23:44:05,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:44:05,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:44:05,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:44:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:44:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:44:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:44:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:44:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:44:05,913 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:44:05,914 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:44:05,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:05 BoogieIcfgContainer [2020-10-14 23:44:05,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:44:05,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:44:05,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:44:05,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:44:05,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:05" (1/3) ... [2020-10-14 23:44:05,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd699a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:05, skipping insertion in model container [2020-10-14 23:44:05,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:05" (2/3) ... [2020-10-14 23:44:05,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd699a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:05, skipping insertion in model container [2020-10-14 23:44:05,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:05" (3/3) ... [2020-10-14 23:44:05,928 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2020-10-14 23:44:05,940 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:44:05,948 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:44:05,963 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:44:05,992 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:44:05,992 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:44:05,992 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:44:05,992 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:44:05,993 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:44:05,993 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:44:05,993 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:44:05,993 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:44:06,026 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-14 23:44:06,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:44:06,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:06,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:06,037 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:06,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:06,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1819770524, now seen corresponding path program 1 times [2020-10-14 23:44:06,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:06,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097142465] [2020-10-14 23:44:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:44:06,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:06,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 23:44:06,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:44:06,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:44:06,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:06,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:06,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:44:06,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:06,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:06,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:06,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:06,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097142465] [2020-10-14 23:44:06,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:06,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:06,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623840874] [2020-10-14 23:44:06,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:06,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:06,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:06,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:06,495 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-14 23:44:06,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:06,544 INFO L93 Difference]: Finished difference Result 69 states and 114 transitions. [2020-10-14 23:44:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:06,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-14 23:44:06,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:06,559 INFO L225 Difference]: With dead ends: 69 [2020-10-14 23:44:06,559 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 23:44:06,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:06,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 23:44:06,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2020-10-14 23:44:06,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 23:44:06,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 65 transitions. [2020-10-14 23:44:06,610 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 65 transitions. Word has length 17 [2020-10-14 23:44:06,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:06,611 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 65 transitions. [2020-10-14 23:44:06,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:06,611 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 65 transitions. [2020-10-14 23:44:06,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:44:06,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:06,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:06,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:44:06,613 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:06,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:06,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1426743514, now seen corresponding path program 1 times [2020-10-14 23:44:06,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:06,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243599636] [2020-10-14 23:44:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:44:06,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:06,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 23:44:06,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:06,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:06,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:06,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:06,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:06,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:06,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:06,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:06,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243599636] [2020-10-14 23:44:06,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:06,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:06,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272256039] [2020-10-14 23:44:06,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:06,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:06,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:06,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:06,840 INFO L87 Difference]: Start difference. First operand 38 states and 65 transitions. Second operand 3 states. [2020-10-14 23:44:06,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:06,880 INFO L93 Difference]: Finished difference Result 87 states and 152 transitions. [2020-10-14 23:44:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:06,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-14 23:44:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:06,882 INFO L225 Difference]: With dead ends: 87 [2020-10-14 23:44:06,882 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 23:44:06,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:06,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 23:44:06,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-14 23:44:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 23:44:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 89 transitions. [2020-10-14 23:44:06,893 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 89 transitions. Word has length 17 [2020-10-14 23:44:06,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:06,894 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 89 transitions. [2020-10-14 23:44:06,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:06,894 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 89 transitions. [2020-10-14 23:44:06,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:44:06,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:06,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:06,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:44:06,896 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:06,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:06,896 INFO L82 PathProgramCache]: Analyzing trace with hash 578525748, now seen corresponding path program 1 times [2020-10-14 23:44:06,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:06,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929104126] [2020-10-14 23:44:06,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:44:06,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:06,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 23:44:06,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:44:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:44:06,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:44:06,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:07,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:07,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:07,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929104126] [2020-10-14 23:44:07,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:07,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:07,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890594830] [2020-10-14 23:44:07,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:07,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:07,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:07,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,009 INFO L87 Difference]: Start difference. First operand 52 states and 89 transitions. Second operand 3 states. [2020-10-14 23:44:07,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:07,029 INFO L93 Difference]: Finished difference Result 97 states and 167 transitions. [2020-10-14 23:44:07,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:07,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-14 23:44:07,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:07,032 INFO L225 Difference]: With dead ends: 97 [2020-10-14 23:44:07,032 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 23:44:07,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 23:44:07,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 69. [2020-10-14 23:44:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 23:44:07,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 119 transitions. [2020-10-14 23:44:07,048 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 119 transitions. Word has length 18 [2020-10-14 23:44:07,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:07,049 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 119 transitions. [2020-10-14 23:44:07,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 119 transitions. [2020-10-14 23:44:07,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:44:07,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:07,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:07,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:44:07,055 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:07,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:07,056 INFO L82 PathProgramCache]: Analyzing trace with hash 185498738, now seen corresponding path program 1 times [2020-10-14 23:44:07,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:07,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714870084] [2020-10-14 23:44:07,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:44:07,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:07,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 23:44:07,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:07,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:07,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:07,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714870084] [2020-10-14 23:44:07,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:07,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:07,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691791676] [2020-10-14 23:44:07,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:07,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:07,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:07,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,215 INFO L87 Difference]: Start difference. First operand 69 states and 119 transitions. Second operand 3 states. [2020-10-14 23:44:07,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:07,232 INFO L93 Difference]: Finished difference Result 106 states and 179 transitions. [2020-10-14 23:44:07,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:07,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-14 23:44:07,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:07,234 INFO L225 Difference]: With dead ends: 106 [2020-10-14 23:44:07,235 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 23:44:07,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 23:44:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-14 23:44:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 23:44:07,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 120 transitions. [2020-10-14 23:44:07,245 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 120 transitions. Word has length 18 [2020-10-14 23:44:07,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:07,245 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 120 transitions. [2020-10-14 23:44:07,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 120 transitions. [2020-10-14 23:44:07,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:44:07,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:07,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:07,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:44:07,247 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:07,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:07,247 INFO L82 PathProgramCache]: Analyzing trace with hash 886563316, now seen corresponding path program 1 times [2020-10-14 23:44:07,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:07,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411598963] [2020-10-14 23:44:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:44:07,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:44:07,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:07,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:44:07,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:07,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:07,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:07,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:07,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411598963] [2020-10-14 23:44:07,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:07,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:07,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493971582] [2020-10-14 23:44:07,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:07,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:07,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:07,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,303 INFO L87 Difference]: Start difference. First operand 72 states and 120 transitions. Second operand 3 states. [2020-10-14 23:44:07,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:07,322 INFO L93 Difference]: Finished difference Result 164 states and 278 transitions. [2020-10-14 23:44:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:07,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-14 23:44:07,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:07,324 INFO L225 Difference]: With dead ends: 164 [2020-10-14 23:44:07,324 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 23:44:07,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 23:44:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-10-14 23:44:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-14 23:44:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 162 transitions. [2020-10-14 23:44:07,338 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 162 transitions. Word has length 18 [2020-10-14 23:44:07,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:07,338 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 162 transitions. [2020-10-14 23:44:07,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:07,338 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 162 transitions. [2020-10-14 23:44:07,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:44:07,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:07,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:07,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:44:07,341 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:07,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:07,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1012809135, now seen corresponding path program 1 times [2020-10-14 23:44:07,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:07,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537331632] [2020-10-14 23:44:07,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:44:07,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:07,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 23:44:07,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:44:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:44:07,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:07,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:07,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:44:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:07,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537331632] [2020-10-14 23:44:07,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:07,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:07,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38647392] [2020-10-14 23:44:07,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:07,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:07,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:07,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,443 INFO L87 Difference]: Start difference. First operand 98 states and 162 transitions. Second operand 3 states. [2020-10-14 23:44:07,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:07,466 INFO L93 Difference]: Finished difference Result 178 states and 298 transitions. [2020-10-14 23:44:07,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:07,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-14 23:44:07,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:07,469 INFO L225 Difference]: With dead ends: 178 [2020-10-14 23:44:07,469 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 23:44:07,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 23:44:07,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 134. [2020-10-14 23:44:07,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 23:44:07,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 220 transitions. [2020-10-14 23:44:07,483 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 220 transitions. Word has length 19 [2020-10-14 23:44:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:07,483 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 220 transitions. [2020-10-14 23:44:07,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 220 transitions. [2020-10-14 23:44:07,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:44:07,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:07,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:07,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:44:07,485 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:07,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:07,486 INFO L82 PathProgramCache]: Analyzing trace with hash 619782125, now seen corresponding path program 1 times [2020-10-14 23:44:07,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:07,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597148623] [2020-10-14 23:44:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:44:07,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:07,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 23:44:07,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:44:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:07,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:07,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:07,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:07,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:07,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597148623] [2020-10-14 23:44:07,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:07,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:07,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701348820] [2020-10-14 23:44:07,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:07,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:07,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:07,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,559 INFO L87 Difference]: Start difference. First operand 134 states and 220 transitions. Second operand 3 states. [2020-10-14 23:44:07,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:07,573 INFO L93 Difference]: Finished difference Result 200 states and 326 transitions. [2020-10-14 23:44:07,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:07,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-14 23:44:07,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:07,575 INFO L225 Difference]: With dead ends: 200 [2020-10-14 23:44:07,575 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 23:44:07,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 23:44:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-10-14 23:44:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 23:44:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 218 transitions. [2020-10-14 23:44:07,587 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 218 transitions. Word has length 19 [2020-10-14 23:44:07,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:07,588 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 218 transitions. [2020-10-14 23:44:07,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 218 transitions. [2020-10-14 23:44:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:44:07,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:07,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:07,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:44:07,589 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:07,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:07,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1320846703, now seen corresponding path program 1 times [2020-10-14 23:44:07,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:07,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613661090] [2020-10-14 23:44:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:44:07,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:44:07,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:07,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:44:07,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:07,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:07,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:07,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:07,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:07,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613661090] [2020-10-14 23:44:07,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:07,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:07,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941788702] [2020-10-14 23:44:07,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:07,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:07,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:07,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,636 INFO L87 Difference]: Start difference. First operand 136 states and 218 transitions. Second operand 3 states. [2020-10-14 23:44:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:07,654 INFO L93 Difference]: Finished difference Result 312 states and 504 transitions. [2020-10-14 23:44:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:07,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-14 23:44:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:07,656 INFO L225 Difference]: With dead ends: 312 [2020-10-14 23:44:07,656 INFO L226 Difference]: Without dead ends: 186 [2020-10-14 23:44:07,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-14 23:44:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2020-10-14 23:44:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-14 23:44:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 290 transitions. [2020-10-14 23:44:07,669 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 290 transitions. Word has length 19 [2020-10-14 23:44:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:07,670 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 290 transitions. [2020-10-14 23:44:07,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:07,670 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 290 transitions. [2020-10-14 23:44:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:44:07,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:07,671 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] [2020-10-14 23:44:07,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:44:07,672 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:07,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:07,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1590692585, now seen corresponding path program 1 times [2020-10-14 23:44:07,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:07,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493877370] [2020-10-14 23:44:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:44:07,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:07,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:44:07,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:44:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:07,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:07,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:07,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:07,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493877370] [2020-10-14 23:44:07,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:07,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:07,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922152618] [2020-10-14 23:44:07,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:07,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:07,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:07,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,741 INFO L87 Difference]: Start difference. First operand 184 states and 290 transitions. Second operand 3 states. [2020-10-14 23:44:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:07,759 INFO L93 Difference]: Finished difference Result 276 states and 432 transitions. [2020-10-14 23:44:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:07,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-14 23:44:07,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:07,761 INFO L225 Difference]: With dead ends: 276 [2020-10-14 23:44:07,761 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 23:44:07,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 23:44:07,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2020-10-14 23:44:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-14 23:44:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 290 transitions. [2020-10-14 23:44:07,773 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 290 transitions. Word has length 20 [2020-10-14 23:44:07,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:07,773 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 290 transitions. [2020-10-14 23:44:07,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:07,774 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 290 transitions. [2020-10-14 23:44:07,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:44:07,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:07,775 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] [2020-10-14 23:44:07,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:44:07,775 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:07,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:07,776 INFO L82 PathProgramCache]: Analyzing trace with hash -2003210133, now seen corresponding path program 1 times [2020-10-14 23:44:07,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:07,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62387389] [2020-10-14 23:44:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:44:07,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:44:07,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:44:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:44:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:07,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:07,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:07,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62387389] [2020-10-14 23:44:07,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:07,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:07,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012848146] [2020-10-14 23:44:07,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:07,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:07,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:07,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,829 INFO L87 Difference]: Start difference. First operand 188 states and 290 transitions. Second operand 3 states. [2020-10-14 23:44:07,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:07,848 INFO L93 Difference]: Finished difference Result 332 states and 520 transitions. [2020-10-14 23:44:07,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:07,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-14 23:44:07,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:07,851 INFO L225 Difference]: With dead ends: 332 [2020-10-14 23:44:07,852 INFO L226 Difference]: Without dead ends: 330 [2020-10-14 23:44:07,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-14 23:44:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 264. [2020-10-14 23:44:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-14 23:44:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 398 transitions. [2020-10-14 23:44:07,879 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 398 transitions. Word has length 20 [2020-10-14 23:44:07,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:07,880 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 398 transitions. [2020-10-14 23:44:07,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:07,880 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 398 transitions. [2020-10-14 23:44:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:44:07,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:07,882 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] [2020-10-14 23:44:07,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:44:07,882 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:07,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:07,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1898730153, now seen corresponding path program 1 times [2020-10-14 23:44:07,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:07,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638788292] [2020-10-14 23:44:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:44:07,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:44:07,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:44:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:07,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:07,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:07,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:07,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:07,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638788292] [2020-10-14 23:44:07,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:07,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:07,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732431232] [2020-10-14 23:44:07,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:07,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:07,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:07,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,927 INFO L87 Difference]: Start difference. First operand 264 states and 398 transitions. Second operand 3 states. [2020-10-14 23:44:07,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:07,947 INFO L93 Difference]: Finished difference Result 604 states and 912 transitions. [2020-10-14 23:44:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:07,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-14 23:44:07,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:07,949 INFO L225 Difference]: With dead ends: 604 [2020-10-14 23:44:07,950 INFO L226 Difference]: Without dead ends: 354 [2020-10-14 23:44:07,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-14 23:44:07,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 352. [2020-10-14 23:44:07,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-14 23:44:07,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 518 transitions. [2020-10-14 23:44:07,962 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 518 transitions. Word has length 20 [2020-10-14 23:44:07,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:07,962 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 518 transitions. [2020-10-14 23:44:07,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:07,963 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 518 transitions. [2020-10-14 23:44:07,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:44:07,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:07,964 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] [2020-10-14 23:44:07,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:44:07,964 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:07,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:07,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1969756604, now seen corresponding path program 1 times [2020-10-14 23:44:07,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:07,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511981767] [2020-10-14 23:44:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:44:08,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:08,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:44:08,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:44:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:44:08,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:08,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:08,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:08,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:08,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511981767] [2020-10-14 23:44:08,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:08,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:08,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824739410] [2020-10-14 23:44:08,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:08,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:08,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:08,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,021 INFO L87 Difference]: Start difference. First operand 352 states and 518 transitions. Second operand 3 states. [2020-10-14 23:44:08,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:08,040 INFO L93 Difference]: Finished difference Result 612 states and 912 transitions. [2020-10-14 23:44:08,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:08,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 23:44:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:08,043 INFO L225 Difference]: With dead ends: 612 [2020-10-14 23:44:08,044 INFO L226 Difference]: Without dead ends: 610 [2020-10-14 23:44:08,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-10-14 23:44:08,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 512. [2020-10-14 23:44:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-10-14 23:44:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 734 transitions. [2020-10-14 23:44:08,060 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 734 transitions. Word has length 21 [2020-10-14 23:44:08,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:08,060 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 734 transitions. [2020-10-14 23:44:08,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:08,060 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 734 transitions. [2020-10-14 23:44:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:44:08,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:08,062 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] [2020-10-14 23:44:08,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:44:08,062 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:08,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:08,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1932183682, now seen corresponding path program 1 times [2020-10-14 23:44:08,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:08,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119719505] [2020-10-14 23:44:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:44:08,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:08,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 23:44:08,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:44:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:08,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:08,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:08,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:08,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:08,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119719505] [2020-10-14 23:44:08,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:08,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:08,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736409471] [2020-10-14 23:44:08,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:08,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:08,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:08,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,126 INFO L87 Difference]: Start difference. First operand 512 states and 734 transitions. Second operand 3 states. [2020-10-14 23:44:08,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:08,150 INFO L93 Difference]: Finished difference Result 1172 states and 1680 transitions. [2020-10-14 23:44:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:08,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 23:44:08,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:08,154 INFO L225 Difference]: With dead ends: 1172 [2020-10-14 23:44:08,154 INFO L226 Difference]: Without dead ends: 674 [2020-10-14 23:44:08,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2020-10-14 23:44:08,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 672. [2020-10-14 23:44:08,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2020-10-14 23:44:08,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 934 transitions. [2020-10-14 23:44:08,175 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 934 transitions. Word has length 21 [2020-10-14 23:44:08,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:08,175 INFO L479 AbstractCegarLoop]: Abstraction has 672 states and 934 transitions. [2020-10-14 23:44:08,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:08,175 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 934 transitions. [2020-10-14 23:44:08,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:44:08,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:08,177 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] [2020-10-14 23:44:08,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:44:08,177 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:08,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:08,178 INFO L82 PathProgramCache]: Analyzing trace with hash -932696864, now seen corresponding path program 1 times [2020-10-14 23:44:08,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:08,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996923549] [2020-10-14 23:44:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:44:08,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:08,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 23:44:08,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:44:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:08,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:08,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:08,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:08,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996923549] [2020-10-14 23:44:08,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:08,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:08,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223806487] [2020-10-14 23:44:08,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:08,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:08,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:08,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,271 INFO L87 Difference]: Start difference. First operand 672 states and 934 transitions. Second operand 3 states. [2020-10-14 23:44:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:08,302 INFO L93 Difference]: Finished difference Result 1020 states and 1416 transitions. [2020-10-14 23:44:08,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:08,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 23:44:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:08,307 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 23:44:08,307 INFO L226 Difference]: Without dead ends: 698 [2020-10-14 23:44:08,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-14 23:44:08,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 696. [2020-10-14 23:44:08,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-10-14 23:44:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 950 transitions. [2020-10-14 23:44:08,327 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 950 transitions. Word has length 22 [2020-10-14 23:44:08,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:08,327 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 950 transitions. [2020-10-14 23:44:08,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 950 transitions. [2020-10-14 23:44:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:44:08,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:08,329 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] [2020-10-14 23:44:08,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:44:08,330 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:08,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:08,330 INFO L82 PathProgramCache]: Analyzing trace with hash -231632286, now seen corresponding path program 1 times [2020-10-14 23:44:08,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:08,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669183652] [2020-10-14 23:44:08,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:44:08,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:08,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 23:44:08,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:08,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:44:08,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:08,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:08,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:08,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:08,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:08,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669183652] [2020-10-14 23:44:08,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:08,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:08,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376509273] [2020-10-14 23:44:08,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:08,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:08,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:08,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,399 INFO L87 Difference]: Start difference. First operand 696 states and 950 transitions. Second operand 3 states. [2020-10-14 23:44:08,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:08,446 INFO L93 Difference]: Finished difference Result 1020 states and 1368 transitions. [2020-10-14 23:44:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:08,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 23:44:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:08,453 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 23:44:08,453 INFO L226 Difference]: Without dead ends: 698 [2020-10-14 23:44:08,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-14 23:44:08,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 696. [2020-10-14 23:44:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-10-14 23:44:08,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 918 transitions. [2020-10-14 23:44:08,480 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 918 transitions. Word has length 22 [2020-10-14 23:44:08,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:08,480 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 918 transitions. [2020-10-14 23:44:08,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 918 transitions. [2020-10-14 23:44:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:44:08,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:08,482 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] [2020-10-14 23:44:08,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:44:08,482 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:08,483 INFO L82 PathProgramCache]: Analyzing trace with hash 26533152, now seen corresponding path program 1 times [2020-10-14 23:44:08,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:08,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307159869] [2020-10-14 23:44:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:44:08,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:44:08,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:08,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:44:08,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:44:08,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:08,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:08,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:08,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:08,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:44:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:08,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307159869] [2020-10-14 23:44:08,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:08,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:08,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859393784] [2020-10-14 23:44:08,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:08,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:08,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:08,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,544 INFO L87 Difference]: Start difference. First operand 696 states and 918 transitions. Second operand 3 states. [2020-10-14 23:44:08,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:08,580 INFO L93 Difference]: Finished difference Result 1164 states and 1544 transitions. [2020-10-14 23:44:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:08,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 23:44:08,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:08,589 INFO L225 Difference]: With dead ends: 1164 [2020-10-14 23:44:08,589 INFO L226 Difference]: Without dead ends: 1162 [2020-10-14 23:44:08,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2020-10-14 23:44:08,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1032. [2020-10-14 23:44:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-14 23:44:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1318 transitions. [2020-10-14 23:44:08,640 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1318 transitions. Word has length 22 [2020-10-14 23:44:08,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:08,640 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1318 transitions. [2020-10-14 23:44:08,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1318 transitions. [2020-10-14 23:44:08,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:44:08,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:08,642 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] [2020-10-14 23:44:08,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:44:08,643 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:08,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:08,643 INFO L82 PathProgramCache]: Analyzing trace with hash -366493858, now seen corresponding path program 1 times [2020-10-14 23:44:08,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:08,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305131262] [2020-10-14 23:44:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:44:08,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:44:08,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:08,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:44:08,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:08,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:08,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:08,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:08,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:08,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305131262] [2020-10-14 23:44:08,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:08,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:08,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808675475] [2020-10-14 23:44:08,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:08,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:08,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:08,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,692 INFO L87 Difference]: Start difference. First operand 1032 states and 1318 transitions. Second operand 3 states. [2020-10-14 23:44:08,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:08,726 INFO L93 Difference]: Finished difference Result 2316 states and 2920 transitions. [2020-10-14 23:44:08,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:08,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 23:44:08,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:08,732 INFO L225 Difference]: With dead ends: 2316 [2020-10-14 23:44:08,732 INFO L226 Difference]: Without dead ends: 1322 [2020-10-14 23:44:08,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-10-14 23:44:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1320. [2020-10-14 23:44:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2020-10-14 23:44:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1606 transitions. [2020-10-14 23:44:08,791 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1606 transitions. Word has length 22 [2020-10-14 23:44:08,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:08,791 INFO L479 AbstractCegarLoop]: Abstraction has 1320 states and 1606 transitions. [2020-10-14 23:44:08,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:08,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1606 transitions. [2020-10-14 23:44:08,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:44:08,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:08,793 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] [2020-10-14 23:44:08,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:44:08,794 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:08,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:08,794 INFO L82 PathProgramCache]: Analyzing trace with hash 822743769, now seen corresponding path program 1 times [2020-10-14 23:44:08,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:08,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3848599] [2020-10-14 23:44:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:44:08,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 23:44:08,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:44:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:08,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:08,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:08,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:08,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:08,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:08,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:08,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3848599] [2020-10-14 23:44:08,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:08,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:08,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355535576] [2020-10-14 23:44:08,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:08,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:08,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:08,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,860 INFO L87 Difference]: Start difference. First operand 1320 states and 1606 transitions. Second operand 3 states. [2020-10-14 23:44:08,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:08,897 INFO L93 Difference]: Finished difference Result 1980 states and 2392 transitions. [2020-10-14 23:44:08,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:08,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 23:44:08,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:08,904 INFO L225 Difference]: With dead ends: 1980 [2020-10-14 23:44:08,904 INFO L226 Difference]: Without dead ends: 1354 [2020-10-14 23:44:08,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-10-14 23:44:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2020-10-14 23:44:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-10-14 23:44:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1606 transitions. [2020-10-14 23:44:08,947 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1606 transitions. Word has length 23 [2020-10-14 23:44:08,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:08,947 INFO L479 AbstractCegarLoop]: Abstraction has 1352 states and 1606 transitions. [2020-10-14 23:44:08,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:08,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1606 transitions. [2020-10-14 23:44:08,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:44:08,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:08,950 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] [2020-10-14 23:44:08,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:44:08,950 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:08,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:08,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1523808347, now seen corresponding path program 1 times [2020-10-14 23:44:08,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:08,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457371656] [2020-10-14 23:44:08,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:44:08,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:44:08,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:44:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:44:08,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:08,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:08,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:08,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:08,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:08,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:08,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457371656] [2020-10-14 23:44:08,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:08,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:08,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845852592] [2020-10-14 23:44:08,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:08,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:08,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:08,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,990 INFO L87 Difference]: Start difference. First operand 1352 states and 1606 transitions. Second operand 3 states. [2020-10-14 23:44:09,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:09,050 INFO L93 Difference]: Finished difference Result 2186 states and 2567 transitions. [2020-10-14 23:44:09,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:09,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 23:44:09,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:09,059 INFO L225 Difference]: With dead ends: 2186 [2020-10-14 23:44:09,060 INFO L226 Difference]: Without dead ends: 2184 [2020-10-14 23:44:09,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2020-10-14 23:44:09,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2056. [2020-10-14 23:44:09,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2056 states. [2020-10-14 23:44:09,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2374 transitions. [2020-10-14 23:44:09,111 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2374 transitions. Word has length 23 [2020-10-14 23:44:09,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:09,112 INFO L479 AbstractCegarLoop]: Abstraction has 2056 states and 2374 transitions. [2020-10-14 23:44:09,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:09,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2374 transitions. [2020-10-14 23:44:09,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:44:09,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:09,115 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] [2020-10-14 23:44:09,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:44:09,116 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:09,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:09,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1130781337, now seen corresponding path program 1 times [2020-10-14 23:44:09,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:09,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684684060] [2020-10-14 23:44:09,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:44:09,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:44:09,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:44:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:09,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:09,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:09,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:09,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:09,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:09,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:09,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684684060] [2020-10-14 23:44:09,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:09,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:09,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326698260] [2020-10-14 23:44:09,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:09,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:09,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:09,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,155 INFO L87 Difference]: Start difference. First operand 2056 states and 2374 transitions. Second operand 3 states. [2020-10-14 23:44:09,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:09,212 INFO L93 Difference]: Finished difference Result 4552 states and 5126 transitions. [2020-10-14 23:44:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:09,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 23:44:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:09,213 INFO L225 Difference]: With dead ends: 4552 [2020-10-14 23:44:09,213 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 23:44:09,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 23:44:09,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 23:44:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 23:44:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 23:44:09,221 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-10-14 23:44:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:09,221 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 23:44:09,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 23:44:09,222 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 23:44:09,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:44:09,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 23:44:09,246 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 23:44:09,247 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:44:09,247 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:44:09,247 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 23:44:09,247 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 23:44:09,247 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:44:09,247 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 121) no Hoare annotation was computed. [2020-10-14 23:44:09,247 INFO L268 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-10-14 23:44:09,247 INFO L268 CegarLoopResult]: For program point L86-1(lines 30 116) no Hoare annotation was computed. [2020-10-14 23:44:09,247 INFO L271 CegarLoopResult]: At program point L111-1(lines 30 116) the Hoare annotation is: true [2020-10-14 23:44:09,248 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-10-14 23:44:09,248 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-10-14 23:44:09,248 INFO L264 CegarLoopResult]: At program point L112-1(lines 5 121) the Hoare annotation is: false [2020-10-14 23:44:09,248 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 121) no Hoare annotation was computed. [2020-10-14 23:44:09,248 INFO L268 CegarLoopResult]: For program point L71-1(lines 30 116) no Hoare annotation was computed. [2020-10-14 23:44:09,248 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 119) no Hoare annotation was computed. [2020-10-14 23:44:09,248 INFO L268 CegarLoopResult]: For program point L96-1(lines 30 116) no Hoare annotation was computed. [2020-10-14 23:44:09,248 INFO L268 CegarLoopResult]: For program point L63-1(lines 30 116) no Hoare annotation was computed. [2020-10-14 23:44:09,249 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 121) the Hoare annotation is: true [2020-10-14 23:44:09,249 INFO L268 CegarLoopResult]: For program point L55-1(lines 30 116) no Hoare annotation was computed. [2020-10-14 23:44:09,249 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-10-14 23:44:09,249 INFO L268 CegarLoopResult]: For program point L81-1(lines 30 116) no Hoare annotation was computed. [2020-10-14 23:44:09,249 INFO L268 CegarLoopResult]: For program point L106-1(lines 30 116) no Hoare annotation was computed. [2020-10-14 23:44:09,249 INFO L268 CegarLoopResult]: For program point L32(lines 32 34) no Hoare annotation was computed. [2020-10-14 23:44:09,249 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-10-14 23:44:09,249 INFO L268 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-10-14 23:44:09,250 INFO L268 CegarLoopResult]: For program point L91-1(lines 30 116) no Hoare annotation was computed. [2020-10-14 23:44:09,250 INFO L268 CegarLoopResult]: For program point L75-1(lines 30 116) no Hoare annotation was computed. [2020-10-14 23:44:09,250 INFO L268 CegarLoopResult]: For program point L67-1(lines 30 116) no Hoare annotation was computed. [2020-10-14 23:44:09,250 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-10-14 23:44:09,250 INFO L268 CegarLoopResult]: For program point L59-1(lines 30 116) no Hoare annotation was computed. [2020-10-14 23:44:09,250 INFO L271 CegarLoopResult]: At program point L117(lines 5 121) the Hoare annotation is: true [2020-10-14 23:44:09,250 INFO L268 CegarLoopResult]: For program point L51(lines 51 53) no Hoare annotation was computed. [2020-10-14 23:44:09,250 INFO L268 CegarLoopResult]: For program point L51-2(lines 30 116) no Hoare annotation was computed. [2020-10-14 23:44:09,250 INFO L268 CegarLoopResult]: For program point L101-1(lines 30 116) no Hoare annotation was computed. [2020-10-14 23:44:09,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:44:09 BoogieIcfgContainer [2020-10-14 23:44:09,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:44:09,264 INFO L168 Benchmark]: Toolchain (without parser) took 3999.13 ms. Allocated memory was 145.8 MB in the beginning and 291.0 MB in the end (delta: 145.2 MB). Free memory was 102.1 MB in the beginning and 198.0 MB in the end (delta: -95.8 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:09,265 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 23:44:09,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.30 ms. Allocated memory is still 145.8 MB. Free memory was 101.7 MB in the beginning and 91.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:09,266 INFO L168 Benchmark]: Boogie Preprocessor took 116.27 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 91.5 MB in the beginning and 180.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:09,266 INFO L168 Benchmark]: RCFGBuilder took 309.92 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 162.7 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:09,267 INFO L168 Benchmark]: TraceAbstraction took 3342.16 ms. Allocated memory was 201.9 MB in the beginning and 291.0 MB in the end (delta: 89.1 MB). Free memory was 162.7 MB in the beginning and 198.0 MB in the end (delta: -35.3 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:09,270 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 226.30 ms. Allocated memory is still 145.8 MB. Free memory was 101.7 MB in the beginning and 91.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.27 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 91.5 MB in the beginning and 180.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 309.92 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 162.7 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3342.16 ms. Allocated memory was 201.9 MB in the beginning and 291.0 MB in the end (delta: 89.1 MB). Free memory was 162.7 MB in the beginning and 198.0 MB in the end (delta: -35.3 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 119]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1236 SDtfs, 573 SDslu, 828 SDs, 0 SdLazy, 107 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2056occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 530 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 138 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 404 NumberOfCodeBlocks, 404 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 384 ConstructedInterpolants, 0 QuantifiedInterpolants, 13918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...