/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/loops/eureka_01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:57:02,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:57:02,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:57:02,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:57:02,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:57:02,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:57:02,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:57:02,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:57:02,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:57:02,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:57:02,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:57:02,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:57:02,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:57:03,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:57:03,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:57:03,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:57:03,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:57:03,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:57:03,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:57:03,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:57:03,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:57:03,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:57:03,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:57:03,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:57:03,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:57:03,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:57:03,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:57:03,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:57:03,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:57:03,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:57:03,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:57:03,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:57:03,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:57:03,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:57:03,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:57:03,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:57:03,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:57:03,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:57:03,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:57:03,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:57:03,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:57:03,076 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 [2020-10-29 09:57:03,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:57:03,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:57:03,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:57:03,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:57:03,104 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:57:03,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:57:03,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:57:03,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:57:03,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:57:03,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:57:03,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:57:03,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:57:03,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:57:03,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:57:03,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:57:03,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:57:03,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:57:03,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:57:03,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:57:03,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:57:03,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:57:03,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:57:03,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:57:03,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:57:03,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:57:03,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:57:03,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:57:03,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:57:03,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:57:03,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:57:03,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:57:03,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:57:03,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:57:03,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:57:03,501 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:57:03,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01-2.c [2020-10-29 09:57:03,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/496d487f5/5ba48db10dc945b3ad9c5d0f50230f0c/FLAG481446fdd [2020-10-29 09:57:04,237 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:57:04,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/eureka_01-2.c [2020-10-29 09:57:04,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/496d487f5/5ba48db10dc945b3ad9c5d0f50230f0c/FLAG481446fdd [2020-10-29 09:57:04,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/496d487f5/5ba48db10dc945b3ad9c5d0f50230f0c [2020-10-29 09:57:04,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:57:04,585 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:57:04,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:57:04,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:57:04,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:57:04,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:57:04" (1/1) ... [2020-10-29 09:57:04,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@956a6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:04, skipping insertion in model container [2020-10-29 09:57:04,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:57:04" (1/1) ... [2020-10-29 09:57:04,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:57:04,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:57:04,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:57:04,869 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:57:04,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:57:04,972 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:57:04,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:04 WrapperNode [2020-10-29 09:57:04,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:57:04,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:57:04,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:57:04,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:57:04,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:04" (1/1) ... [2020-10-29 09:57:04,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:04" (1/1) ... [2020-10-29 09:57:05,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:04" (1/1) ... [2020-10-29 09:57:05,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:04" (1/1) ... [2020-10-29 09:57:05,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:04" (1/1) ... [2020-10-29 09:57:05,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:04" (1/1) ... [2020-10-29 09:57:05,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:04" (1/1) ... [2020-10-29 09:57:05,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:57:05,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:57:05,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:57:05,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:57:05,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:04" (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 [2020-10-29 09:57:05,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:57:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:57:05,169 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:57:05,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:57:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:57:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:57:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:57:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:57:05,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:57:05,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:57:05,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:57:05,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:57:05,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:57:05,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:57:05,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:57:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:57:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:57:05,848 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:57:05,849 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-29 09:57:05,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:57:05 BoogieIcfgContainer [2020-10-29 09:57:05,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:57:05,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:57:05,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:57:05,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:57:05,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:57:04" (1/3) ... [2020-10-29 09:57:05,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749c3cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:57:05, skipping insertion in model container [2020-10-29 09:57:05,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:57:04" (2/3) ... [2020-10-29 09:57:05,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749c3cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:57:05, skipping insertion in model container [2020-10-29 09:57:05,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:57:05" (3/3) ... [2020-10-29 09:57:05,862 INFO L111 eAbstractionObserver]: Analyzing ICFG eureka_01-2.c [2020-10-29 09:57:05,874 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:57:05,879 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:57:05,892 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:57:05,919 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:57:05,919 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:57:05,919 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:57:05,919 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:57:05,920 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:57:05,920 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:57:05,920 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:57:05,920 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:57:05,937 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-29 09:57:05,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 09:57:05,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:05,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:05,944 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:05,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:05,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1039958062, now seen corresponding path program 1 times [2020-10-29 09:57:05,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:05,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63117011] [2020-10-29 09:57:05,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:06,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:06,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:06,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:06,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:07,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:07,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 09:57:07,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:57:07,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1294 [2020-10-29 09:57:07,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:07,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:57:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:57:07,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:07,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:57:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:07,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:07,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:07,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:07,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:07,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:57:07,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:07,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:07,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:57:07,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:07,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:57:07,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:57:07,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63117011] [2020-10-29 09:57:07,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:57:07,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:57:07,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479162886] [2020-10-29 09:57:07,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:57:07,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:07,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:57:07,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:57:07,592 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2020-10-29 09:57:07,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:07,807 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-10-29 09:57:07,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:57:07,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-29 09:57:07,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:07,818 INFO L225 Difference]: With dead ends: 86 [2020-10-29 09:57:07,818 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 09:57:07,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:57:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 09:57:07,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2020-10-29 09:57:07,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 09:57:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-29 09:57:07,869 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-10-29 09:57:07,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:07,869 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-29 09:57:07,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:57:07,869 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-29 09:57:07,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:57:07,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:07,871 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] [2020-10-29 09:57:07,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:57:07,871 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:07,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:07,872 INFO L82 PathProgramCache]: Analyzing trace with hash 616663161, now seen corresponding path program 1 times [2020-10-29 09:57:07,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:07,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914646830] [2020-10-29 09:57:07,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:07,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:07,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:08,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:08,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:57:08,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:57:08,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 818 [2020-10-29 09:57:08,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:08,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:57:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:57:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:57:08,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:08,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:08,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:08,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:08,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:08,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:57:08,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:08,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:57:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:08,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:57:08,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:57:08,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914646830] [2020-10-29 09:57:08,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:57:08,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:57:08,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708272391] [2020-10-29 09:57:08,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:57:08,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:08,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:57:08,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:57:08,805 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2020-10-29 09:57:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:08,994 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2020-10-29 09:57:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:57:08,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-29 09:57:08,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:08,996 INFO L225 Difference]: With dead ends: 79 [2020-10-29 09:57:08,996 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 09:57:08,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:57:08,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 09:57:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2020-10-29 09:57:09,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-29 09:57:09,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-29 09:57:09,007 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 21 [2020-10-29 09:57:09,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:09,008 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-29 09:57:09,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:57:09,008 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-29 09:57:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:57:09,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:09,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:09,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:57:09,010 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:09,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:09,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1361409623, now seen corresponding path program 1 times [2020-10-29 09:57:09,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:09,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075906326] [2020-10-29 09:57:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:09,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:09,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:09,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:10,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:10,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:14,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:14,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:57:14,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:57:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:57:14,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:14,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:57:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:57:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:57:14,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:14,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:14,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:14,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:14,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:57:14,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:14,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:57:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:57:14,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:57:14,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075906326] [2020-10-29 09:57:14,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:14,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:57:14,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337503510] [2020-10-29 09:57:14,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:57:14,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:14,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:57:14,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:57:14,267 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 9 states. [2020-10-29 09:57:14,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:14,620 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2020-10-29 09:57:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:57:14,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-29 09:57:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:14,622 INFO L225 Difference]: With dead ends: 78 [2020-10-29 09:57:14,622 INFO L226 Difference]: Without dead ends: 75 [2020-10-29 09:57:14,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:57:14,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-29 09:57:14,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2020-10-29 09:57:14,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 09:57:14,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-10-29 09:57:14,637 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 27 [2020-10-29 09:57:14,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:14,638 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-10-29 09:57:14,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:57:14,638 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-10-29 09:57:14,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:57:14,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:14,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:14,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:57:14,640 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:14,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:14,640 INFO L82 PathProgramCache]: Analyzing trace with hash 543761173, now seen corresponding path program 1 times [2020-10-29 09:57:14,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:14,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265058420] [2020-10-29 09:57:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:14,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:14,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:14,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:14,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:14,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:18,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:18,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:57:18,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:57:18,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3422 [2020-10-29 09:57:18,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:18,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:18,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:57:18,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:18,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:57:18,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:18,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:18,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:18,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:18,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:57:18,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:18,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:18,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:57:18,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265058420] [2020-10-29 09:57:18,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:18,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:57:18,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845223618] [2020-10-29 09:57:18,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:57:18,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:18,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:57:18,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:57:18,402 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 15 states. [2020-10-29 09:57:20,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:20,358 INFO L93 Difference]: Finished difference Result 143 states and 178 transitions. [2020-10-29 09:57:20,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 09:57:20,359 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-10-29 09:57:20,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:20,364 INFO L225 Difference]: With dead ends: 143 [2020-10-29 09:57:20,364 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 09:57:20,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=344, Invalid=1378, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:57:20,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 09:57:20,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 65. [2020-10-29 09:57:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 09:57:20,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2020-10-29 09:57:20,386 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 27 [2020-10-29 09:57:20,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:20,386 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2020-10-29 09:57:20,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:57:20,386 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2020-10-29 09:57:20,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:57:20,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:20,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:20,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:57:20,388 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:20,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:20,389 INFO L82 PathProgramCache]: Analyzing trace with hash 241429256, now seen corresponding path program 1 times [2020-10-29 09:57:20,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:20,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546872539] [2020-10-29 09:57:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:20,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:20,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:20,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:20,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:21,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:25,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 09:57:25,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:57:25,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 09:57:25,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:25,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:57:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:57:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:57:25,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:25,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:25,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:25,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:25,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:25,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:57:25,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:25,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:25,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:57:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:57:25,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:57:25,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546872539] [2020-10-29 09:57:25,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:25,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 09:57:25,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572967915] [2020-10-29 09:57:25,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:57:25,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:25,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:57:25,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:57:25,496 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand 6 states. [2020-10-29 09:57:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:25,680 INFO L93 Difference]: Finished difference Result 134 states and 169 transitions. [2020-10-29 09:57:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:57:25,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-29 09:57:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:25,682 INFO L225 Difference]: With dead ends: 134 [2020-10-29 09:57:25,682 INFO L226 Difference]: Without dead ends: 115 [2020-10-29 09:57:25,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:57:25,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-29 09:57:25,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 71. [2020-10-29 09:57:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 09:57:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2020-10-29 09:57:25,698 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 30 [2020-10-29 09:57:25,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:25,698 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2020-10-29 09:57:25,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:57:25,698 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2020-10-29 09:57:25,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:57:25,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:25,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:25,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:57:25,700 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:25,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:25,701 INFO L82 PathProgramCache]: Analyzing trace with hash 160127566, now seen corresponding path program 2 times [2020-10-29 09:57:25,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:25,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042336128] [2020-10-29 09:57:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:25,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:30,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:30,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:57:30,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:57:30,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:57:30,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:30,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:57:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:57:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:57:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:57:30,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:30,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:30,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:30,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:30,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:30,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:57:30,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:30,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:57:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:57:30,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:57:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:57:30,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042336128] [2020-10-29 09:57:30,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:30,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:57:30,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784635911] [2020-10-29 09:57:30,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:57:30,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:30,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:57:30,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:57:30,826 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand 7 states. [2020-10-29 09:57:31,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:31,086 INFO L93 Difference]: Finished difference Result 167 states and 214 transitions. [2020-10-29 09:57:31,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:57:31,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-29 09:57:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:31,089 INFO L225 Difference]: With dead ends: 167 [2020-10-29 09:57:31,089 INFO L226 Difference]: Without dead ends: 148 [2020-10-29 09:57:31,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:57:31,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-29 09:57:31,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 77. [2020-10-29 09:57:31,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 09:57:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2020-10-29 09:57:31,121 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 33 [2020-10-29 09:57:31,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:31,121 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2020-10-29 09:57:31,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:57:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2020-10-29 09:57:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 09:57:31,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:31,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:31,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:57:31,127 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:31,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:31,128 INFO L82 PathProgramCache]: Analyzing trace with hash 463035720, now seen corresponding path program 3 times [2020-10-29 09:57:31,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:31,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873566252] [2020-10-29 09:57:31,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:31,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:31,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:31,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:31,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:32,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:32,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:33,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:36,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:36,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:57:36,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:57:36,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 09:57:36,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:36,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:36,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:57:36,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:57:36,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:57:36,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:36,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:36,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:36,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:36,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:36,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:57:36,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:36,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:57:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:57:36,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:57:36,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873566252] [2020-10-29 09:57:36,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:36,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:57:36,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151530685] [2020-10-29 09:57:36,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:57:36,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:36,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:57:36,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:57:36,258 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand 8 states. [2020-10-29 09:57:36,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:36,596 INFO L93 Difference]: Finished difference Result 200 states and 259 transitions. [2020-10-29 09:57:36,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:57:36,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-29 09:57:36,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:36,601 INFO L225 Difference]: With dead ends: 200 [2020-10-29 09:57:36,601 INFO L226 Difference]: Without dead ends: 181 [2020-10-29 09:57:36,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:57:36,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-29 09:57:36,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 83. [2020-10-29 09:57:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 09:57:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2020-10-29 09:57:36,633 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 36 [2020-10-29 09:57:36,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:36,634 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2020-10-29 09:57:36,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:57:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2020-10-29 09:57:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:57:36,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:36,640 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:36,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:57:36,642 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:36,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:36,643 INFO L82 PathProgramCache]: Analyzing trace with hash 673562638, now seen corresponding path program 4 times [2020-10-29 09:57:36,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:36,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795642009] [2020-10-29 09:57:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:36,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:36,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:36,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:37,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:37,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:37,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:39,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:41,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 09:57:41,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:57:41,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:57:41,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:41,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:41,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:57:41,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:57:41,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:57:41,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:41,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:41,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:41,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:41,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:41,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:57:41,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:41,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:41,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:57:41,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:41,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:57:41,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:57:41,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795642009] [2020-10-29 09:57:41,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:41,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:57:41,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593349506] [2020-10-29 09:57:41,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:57:41,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:41,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:57:41,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:57:41,790 INFO L87 Difference]: Start difference. First operand 83 states and 99 transitions. Second operand 9 states. [2020-10-29 09:57:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:42,235 INFO L93 Difference]: Finished difference Result 233 states and 304 transitions. [2020-10-29 09:57:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:57:42,236 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-29 09:57:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:42,238 INFO L225 Difference]: With dead ends: 233 [2020-10-29 09:57:42,238 INFO L226 Difference]: Without dead ends: 214 [2020-10-29 09:57:42,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:57:42,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-29 09:57:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 89. [2020-10-29 09:57:42,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 09:57:42,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2020-10-29 09:57:42,256 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 39 [2020-10-29 09:57:42,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:42,256 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2020-10-29 09:57:42,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:57:42,257 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2020-10-29 09:57:42,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:57:42,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:42,258 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:42,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:57:42,259 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:42,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:42,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1828724616, now seen corresponding path program 5 times [2020-10-29 09:57:42,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:42,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736907941] [2020-10-29 09:57:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:42,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:42,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:42,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:42,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:43,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:47,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:47,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 09:57:47,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:57:47,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:57:47,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:47,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:57:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:57:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:57:47,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:47,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:47,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:47,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:47,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:47,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:47,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:57:47,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:47,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:47,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:57:47,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:47,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:57:47,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:57:47,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736907941] [2020-10-29 09:57:47,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:47,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:57:47,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823201650] [2020-10-29 09:57:47,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:57:47,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:47,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:57:47,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:57:47,422 INFO L87 Difference]: Start difference. First operand 89 states and 105 transitions. Second operand 10 states. [2020-10-29 09:57:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:48,017 INFO L93 Difference]: Finished difference Result 266 states and 349 transitions. [2020-10-29 09:57:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:57:48,018 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-29 09:57:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:48,023 INFO L225 Difference]: With dead ends: 266 [2020-10-29 09:57:48,024 INFO L226 Difference]: Without dead ends: 247 [2020-10-29 09:57:48,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:57:48,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-29 09:57:48,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 95. [2020-10-29 09:57:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 09:57:48,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2020-10-29 09:57:48,050 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 42 [2020-10-29 09:57:48,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:48,050 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2020-10-29 09:57:48,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:57:48,050 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2020-10-29 09:57:48,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:57:48,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:48,053 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:48,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:57:48,054 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:48,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:48,054 INFO L82 PathProgramCache]: Analyzing trace with hash -313731634, now seen corresponding path program 6 times [2020-10-29 09:57:48,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:48,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610228759] [2020-10-29 09:57:48,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:53,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:53,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:57:53,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 09:57:53,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 09:57:53,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:53,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:57:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:57:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:57:53,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:53,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:53,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:53,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:53,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:53,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:53,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:57:53,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:53,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:57:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:57:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:57:53,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610228759] [2020-10-29 09:57:53,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:53,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:57:53,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81737621] [2020-10-29 09:57:53,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:57:53,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:53,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:57:53,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:57:53,261 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand 11 states. [2020-10-29 09:57:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:53,880 INFO L93 Difference]: Finished difference Result 299 states and 394 transitions. [2020-10-29 09:57:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:57:53,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-29 09:57:53,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:53,883 INFO L225 Difference]: With dead ends: 299 [2020-10-29 09:57:53,884 INFO L226 Difference]: Without dead ends: 280 [2020-10-29 09:57:53,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:57:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-29 09:57:53,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 101. [2020-10-29 09:57:53,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 09:57:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2020-10-29 09:57:53,901 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 45 [2020-10-29 09:57:53,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:53,901 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2020-10-29 09:57:53,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:57:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2020-10-29 09:57:53,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 09:57:53,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:53,903 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:53,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:57:53,903 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:53,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:53,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1281110472, now seen corresponding path program 7 times [2020-10-29 09:57:53,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:53,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278251722] [2020-10-29 09:57:53,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:53,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:53,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:53,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:54,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:54,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:54,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:55,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:58,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:58,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:57:58,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 09:57:58,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 09:57:58,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:58,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:57:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:57:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:57:58,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:59,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:59,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:59,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:59,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:59,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:59,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:57:59,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:59,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:57:59,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:59,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:57:59,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:57:59,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278251722] [2020-10-29 09:57:59,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:59,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:57:59,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972352941] [2020-10-29 09:57:59,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:57:59,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:59,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:57:59,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:57:59,123 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand 12 states. [2020-10-29 09:57:59,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:59,799 INFO L93 Difference]: Finished difference Result 332 states and 439 transitions. [2020-10-29 09:57:59,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:57:59,800 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-29 09:57:59,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:59,803 INFO L225 Difference]: With dead ends: 332 [2020-10-29 09:57:59,803 INFO L226 Difference]: Without dead ends: 313 [2020-10-29 09:57:59,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:57:59,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-29 09:57:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 107. [2020-10-29 09:57:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 09:57:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 123 transitions. [2020-10-29 09:57:59,833 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 123 transitions. Word has length 48 [2020-10-29 09:57:59,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:59,833 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 123 transitions. [2020-10-29 09:57:59,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:57:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 123 transitions. [2020-10-29 09:57:59,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 09:57:59,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:59,836 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:59,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:57:59,836 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:59,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:59,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2000905330, now seen corresponding path program 8 times [2020-10-29 09:57:59,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:59,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950207524] [2020-10-29 09:57:59,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:59,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:59,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:59,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:00,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:01,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:01,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:01,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:02,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:02,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:04,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:04,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:58:04,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 09:58:04,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 09:58:04,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:04,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:58:04,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:58:04,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:58:04,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:05,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:05,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:05,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:05,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:05,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:05,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:58:05,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:05,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:05,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:05,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:05,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:05,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:58:05,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950207524] [2020-10-29 09:58:05,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:05,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:58:05,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760877745] [2020-10-29 09:58:05,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:58:05,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:05,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:58:05,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:58:05,072 INFO L87 Difference]: Start difference. First operand 107 states and 123 transitions. Second operand 13 states. [2020-10-29 09:58:05,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:05,788 INFO L93 Difference]: Finished difference Result 365 states and 484 transitions. [2020-10-29 09:58:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:58:05,788 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-29 09:58:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:05,792 INFO L225 Difference]: With dead ends: 365 [2020-10-29 09:58:05,792 INFO L226 Difference]: Without dead ends: 346 [2020-10-29 09:58:05,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:58:05,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-29 09:58:05,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 113. [2020-10-29 09:58:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 09:58:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2020-10-29 09:58:05,812 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 51 [2020-10-29 09:58:05,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:05,813 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2020-10-29 09:58:05,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:58:05,813 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2020-10-29 09:58:05,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 09:58:05,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:05,814 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:05,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:58:05,815 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:05,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:05,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1603169272, now seen corresponding path program 9 times [2020-10-29 09:58:05,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:05,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313365788] [2020-10-29 09:58:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:05,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:05,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:05,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:06,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:06,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:06,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:06,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:06,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:06,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:06,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:07,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:08,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:09,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:10,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:10,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 09:58:10,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:58:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 09:58:10,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:10,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:58:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:58:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:58:10,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:11,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:11,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:11,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:11,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:11,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:11,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:11,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:11,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:11,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:11,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 115 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:58:11,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313365788] [2020-10-29 09:58:11,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:11,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:58:11,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59664580] [2020-10-29 09:58:11,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:58:11,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:11,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:58:11,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:58:11,071 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand 14 states. [2020-10-29 09:58:11,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:11,350 INFO L93 Difference]: Finished difference Result 238 states and 280 transitions. [2020-10-29 09:58:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:58:11,350 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-29 09:58:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:11,352 INFO L225 Difference]: With dead ends: 238 [2020-10-29 09:58:11,352 INFO L226 Difference]: Without dead ends: 131 [2020-10-29 09:58:11,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:58:11,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-29 09:58:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2020-10-29 09:58:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 09:58:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2020-10-29 09:58:11,378 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 54 [2020-10-29 09:58:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:11,379 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2020-10-29 09:58:11,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:58:11,379 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2020-10-29 09:58:11,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 09:58:11,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:11,380 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:11,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:58:11,380 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:11,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1244236661, now seen corresponding path program 1 times [2020-10-29 09:58:11,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:11,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313385784] [2020-10-29 09:58:11,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:11,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:11,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:11,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:12,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:16,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:16,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 09:58:16,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:58:16,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 09:58:16,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:16,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:58:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:58:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:58:16,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:17,074 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 81 [2020-10-29 09:58:17,500 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 76 [2020-10-29 09:58:18,340 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 106 [2020-10-29 09:58:18,595 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 64 [2020-10-29 09:58:18,768 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 50 [2020-10-29 09:58:18,925 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 44 [2020-10-29 09:58:19,092 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2020-10-29 09:58:19,271 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 51 [2020-10-29 09:58:19,449 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 52 [2020-10-29 09:58:19,624 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 52 [2020-10-29 09:58:19,823 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 52 [2020-10-29 09:58:20,019 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 52 [2020-10-29 09:58:20,220 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 52 [2020-10-29 09:58:20,470 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 51 [2020-10-29 09:58:20,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:20,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:20,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:20,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:20,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:20,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:58:20,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:20,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:20,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:20,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:20,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 38 proven. 83 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:58:20,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313385784] [2020-10-29 09:58:20,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:20,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:58:20,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907585627] [2020-10-29 09:58:20,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:58:20,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:20,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:58:20,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:58:20,677 INFO L87 Difference]: Start difference. First operand 125 states and 144 transitions. Second operand 18 states. [2020-10-29 09:58:21,211 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 106 [2020-10-29 09:58:21,532 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-10-29 09:58:21,826 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-10-29 09:58:22,557 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 106 [2020-10-29 09:58:23,070 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 102 [2020-10-29 09:58:23,479 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-29 09:58:23,798 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2020-10-29 09:58:24,575 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 102 [2020-10-29 09:58:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:25,224 INFO L93 Difference]: Finished difference Result 297 states and 348 transitions. [2020-10-29 09:58:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:58:25,225 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-10-29 09:58:25,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:25,227 INFO L225 Difference]: With dead ends: 297 [2020-10-29 09:58:25,228 INFO L226 Difference]: Without dead ends: 256 [2020-10-29 09:58:25,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:58:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-29 09:58:25,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 172. [2020-10-29 09:58:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-29 09:58:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 210 transitions. [2020-10-29 09:58:25,258 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 210 transitions. Word has length 57 [2020-10-29 09:58:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:25,258 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 210 transitions. [2020-10-29 09:58:25,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:58:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 210 transitions. [2020-10-29 09:58:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 09:58:25,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:25,259 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:25,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:58:25,260 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:25,260 INFO L82 PathProgramCache]: Analyzing trace with hash -577696071, now seen corresponding path program 2 times [2020-10-29 09:58:25,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:25,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746251006] [2020-10-29 09:58:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:25,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:25,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:26,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:26,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:30,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:30,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 09:58:30,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 09:58:30,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:58:30,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:30,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:58:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:58:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:58:30,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:30,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:30,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:30,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:30,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:30,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:30,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:58:30,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:30,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:30,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:58:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 100 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 09:58:30,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746251006] [2020-10-29 09:58:30,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:30,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:58:30,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82949608] [2020-10-29 09:58:30,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:58:30,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:30,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:58:30,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:58:30,501 INFO L87 Difference]: Start difference. First operand 172 states and 210 transitions. Second operand 13 states. [2020-10-29 09:58:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:30,953 INFO L93 Difference]: Finished difference Result 338 states and 422 transitions. [2020-10-29 09:58:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:58:30,954 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-29 09:58:30,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:30,956 INFO L225 Difference]: With dead ends: 338 [2020-10-29 09:58:30,956 INFO L226 Difference]: Without dead ends: 210 [2020-10-29 09:58:30,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:58:30,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-29 09:58:31,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 193. [2020-10-29 09:58:31,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-29 09:58:31,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 238 transitions. [2020-10-29 09:58:31,006 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 238 transitions. Word has length 57 [2020-10-29 09:58:31,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:31,007 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 238 transitions. [2020-10-29 09:58:31,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:58:31,007 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 238 transitions. [2020-10-29 09:58:31,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 09:58:31,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:31,008 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:31,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:58:31,008 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:31,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:31,009 INFO L82 PathProgramCache]: Analyzing trace with hash 888357932, now seen corresponding path program 3 times [2020-10-29 09:58:31,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:31,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964769313] [2020-10-29 09:58:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:31,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:31,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:31,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:31,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:32,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:33,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:34,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:36,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:36,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 09:58:36,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 09:58:36,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 09:58:36,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:36,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:36,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:58:36,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:58:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:58:36,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:36,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:36,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:36,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:36,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:36,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:58:36,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:36,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:36,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 100 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 09:58:36,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964769313] [2020-10-29 09:58:36,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:36,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:58:36,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851571597] [2020-10-29 09:58:36,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:58:36,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:36,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:58:36,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:58:36,243 INFO L87 Difference]: Start difference. First operand 193 states and 238 transitions. Second operand 14 states. [2020-10-29 09:58:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:36,662 INFO L93 Difference]: Finished difference Result 374 states and 470 transitions. [2020-10-29 09:58:36,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:58:36,663 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-29 09:58:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:36,665 INFO L225 Difference]: With dead ends: 374 [2020-10-29 09:58:36,665 INFO L226 Difference]: Without dead ends: 231 [2020-10-29 09:58:36,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:58:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-29 09:58:36,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 214. [2020-10-29 09:58:36,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-29 09:58:36,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 266 transitions. [2020-10-29 09:58:36,711 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 266 transitions. Word has length 60 [2020-10-29 09:58:36,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:36,711 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 266 transitions. [2020-10-29 09:58:36,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:58:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 266 transitions. [2020-10-29 09:58:36,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 09:58:36,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:36,713 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:36,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:58:36,713 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:36,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:36,714 INFO L82 PathProgramCache]: Analyzing trace with hash 580728281, now seen corresponding path program 4 times [2020-10-29 09:58:36,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:36,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709314080] [2020-10-29 09:58:36,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:36,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:36,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:36,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:37,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:37,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:39,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:41,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:41,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 09:58:41,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:58:41,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 09:58:41,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:41,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:41,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:58:41,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:58:41,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:58:41,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:41,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:41,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:41,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:41,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:41,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:41,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:41,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 88 proven. 22 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-29 09:58:41,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709314080] [2020-10-29 09:58:41,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:41,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:58:41,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089513021] [2020-10-29 09:58:41,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:58:41,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:41,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:58:41,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:58:41,935 INFO L87 Difference]: Start difference. First operand 214 states and 266 transitions. Second operand 14 states. [2020-10-29 09:58:42,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:42,462 INFO L93 Difference]: Finished difference Result 410 states and 518 transitions. [2020-10-29 09:58:42,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:58:42,463 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-29 09:58:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:42,466 INFO L225 Difference]: With dead ends: 410 [2020-10-29 09:58:42,466 INFO L226 Difference]: Without dead ends: 252 [2020-10-29 09:58:42,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:58:42,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-29 09:58:42,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 235. [2020-10-29 09:58:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-29 09:58:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 294 transitions. [2020-10-29 09:58:42,509 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 294 transitions. Word has length 63 [2020-10-29 09:58:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:42,509 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 294 transitions. [2020-10-29 09:58:42,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:58:42,510 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 294 transitions. [2020-10-29 09:58:42,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 09:58:42,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:42,511 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:42,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 09:58:42,511 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:42,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:42,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1446005004, now seen corresponding path program 5 times [2020-10-29 09:58:42,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:42,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109965646] [2020-10-29 09:58:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:42,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:42,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:42,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:42,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:47,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:47,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:47,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:47,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 09:58:47,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:58:47,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:58:47,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:47,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:58:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:58:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:58:47,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:47,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:47,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:47,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:47,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:47,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:58:47,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:47,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:47,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:47,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:47,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:47,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 100 proven. 35 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 09:58:47,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109965646] [2020-10-29 09:58:47,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:47,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:58:47,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338367639] [2020-10-29 09:58:47,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:58:47,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:47,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:58:47,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:58:47,768 INFO L87 Difference]: Start difference. First operand 235 states and 294 transitions. Second operand 16 states. [2020-10-29 09:58:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:48,370 INFO L93 Difference]: Finished difference Result 446 states and 566 transitions. [2020-10-29 09:58:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:58:48,371 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-10-29 09:58:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:48,373 INFO L225 Difference]: With dead ends: 446 [2020-10-29 09:58:48,373 INFO L226 Difference]: Without dead ends: 273 [2020-10-29 09:58:48,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:58:48,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-29 09:58:48,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 256. [2020-10-29 09:58:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-29 09:58:48,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 322 transitions. [2020-10-29 09:58:48,425 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 322 transitions. Word has length 66 [2020-10-29 09:58:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:48,425 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 322 transitions. [2020-10-29 09:58:48,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:58:48,426 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 322 transitions. [2020-10-29 09:58:48,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 09:58:48,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:48,427 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:48,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 09:58:48,427 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:48,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:48,428 INFO L82 PathProgramCache]: Analyzing trace with hash 511149305, now seen corresponding path program 6 times [2020-10-29 09:58:48,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:48,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126956255] [2020-10-29 09:58:48,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:48,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:48,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:48,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:53,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:53,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 09:58:53,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:58:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 09:58:53,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:53,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:58:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:58:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:58:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:53,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:53,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:53,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:53,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:53,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:53,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:53,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:53,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-10-29 09:58:53,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126956255] [2020-10-29 09:58:53,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:53,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 09:58:53,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976193032] [2020-10-29 09:58:53,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:58:53,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:53,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:58:53,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:58:53,551 INFO L87 Difference]: Start difference. First operand 256 states and 322 transitions. Second operand 6 states. [2020-10-29 09:58:53,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:53,777 INFO L93 Difference]: Finished difference Result 449 states and 559 transitions. [2020-10-29 09:58:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:58:53,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-29 09:58:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:53,781 INFO L225 Difference]: With dead ends: 449 [2020-10-29 09:58:53,781 INFO L226 Difference]: Without dead ends: 261 [2020-10-29 09:58:53,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:58:53,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-29 09:58:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 183. [2020-10-29 09:58:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-29 09:58:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 220 transitions. [2020-10-29 09:58:53,813 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 220 transitions. Word has length 69 [2020-10-29 09:58:53,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:53,813 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 220 transitions. [2020-10-29 09:58:53,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:58:53,813 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 220 transitions. [2020-10-29 09:58:53,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 09:58:53,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:53,814 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 9, 9, 9, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:53,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 09:58:53,815 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:53,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:53,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1824963785, now seen corresponding path program 7 times [2020-10-29 09:58:53,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:53,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151709610] [2020-10-29 09:58:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:53,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:53,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:53,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:58,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:58,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 09:58:58,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:58:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-29 09:58:58,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:58,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:58:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:58:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 09:58:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:58,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:58,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:58,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:58,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:58,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:58,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:58,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:58,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:58,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:58,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:58,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:58,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-29 09:58:58,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151709610] [2020-10-29 09:58:58,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:58,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:58:58,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643975943] [2020-10-29 09:58:58,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:58:58,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:58,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:58:58,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:58:58,980 INFO L87 Difference]: Start difference. First operand 183 states and 220 transitions. Second operand 7 states. [2020-10-29 09:58:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:59,261 INFO L93 Difference]: Finished difference Result 452 states and 560 transitions. [2020-10-29 09:58:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:58:59,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-29 09:58:59,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:59,265 INFO L225 Difference]: With dead ends: 452 [2020-10-29 09:58:59,265 INFO L226 Difference]: Without dead ends: 287 [2020-10-29 09:58:59,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:58:59,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-29 09:58:59,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 231. [2020-10-29 09:58:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-29 09:58:59,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 284 transitions. [2020-10-29 09:58:59,319 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 284 transitions. Word has length 93 [2020-10-29 09:58:59,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:59,320 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 284 transitions. [2020-10-29 09:58:59,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:58:59,320 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 284 transitions. [2020-10-29 09:58:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 09:58:59,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:59,321 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:59,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 09:58:59,322 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:59,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:59,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1741422325, now seen corresponding path program 8 times [2020-10-29 09:58:59,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:59,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287123050] [2020-10-29 09:58:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:03,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:04,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:04,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 09:59:04,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:59:04,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-29 09:59:04,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:04,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:04,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:59:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:59:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 09:59:04,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:04,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:04,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:04,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:04,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:04,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:59:04,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:04,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:04,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 5 proven. 293 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-10-29 09:59:04,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287123050] [2020-10-29 09:59:04,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:04,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:59:04,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745482505] [2020-10-29 09:59:04,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:59:04,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:04,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:59:04,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:59:04,572 INFO L87 Difference]: Start difference. First operand 231 states and 284 transitions. Second operand 11 states. [2020-10-29 09:59:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:04,895 INFO L93 Difference]: Finished difference Result 426 states and 529 transitions. [2020-10-29 09:59:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:59:04,896 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 117 [2020-10-29 09:59:04,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:04,898 INFO L225 Difference]: With dead ends: 426 [2020-10-29 09:59:04,899 INFO L226 Difference]: Without dead ends: 261 [2020-10-29 09:59:04,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:59:04,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-29 09:59:04,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 249. [2020-10-29 09:59:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-29 09:59:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 308 transitions. [2020-10-29 09:59:04,946 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 308 transitions. Word has length 117 [2020-10-29 09:59:04,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:04,946 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 308 transitions. [2020-10-29 09:59:04,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:59:04,946 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 308 transitions. [2020-10-29 09:59:04,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 09:59:04,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:04,948 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:04,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 09:59:04,948 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:04,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:04,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1991333626, now seen corresponding path program 9 times [2020-10-29 09:59:04,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:04,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530964177] [2020-10-29 09:59:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:04,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:05,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:05,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:06,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:06,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:09,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:09,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 09:59:09,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:59:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 09:59:09,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:09,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:59:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 09:59:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 09:59:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:10,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:10,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:10,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:59:10,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:10,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:10,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 50 proven. 568 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-29 09:59:10,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530964177] [2020-10-29 09:59:10,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:10,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:59:10,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538611560] [2020-10-29 09:59:10,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:59:10,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:10,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:59:10,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:59:10,684 INFO L87 Difference]: Start difference. First operand 249 states and 308 transitions. Second operand 20 states. [2020-10-29 09:59:12,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:12,501 INFO L93 Difference]: Finished difference Result 423 states and 523 transitions. [2020-10-29 09:59:12,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:59:12,502 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 126 [2020-10-29 09:59:12,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:12,504 INFO L225 Difference]: With dead ends: 423 [2020-10-29 09:59:12,504 INFO L226 Difference]: Without dead ends: 353 [2020-10-29 09:59:12,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:59:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-29 09:59:12,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 306. [2020-10-29 09:59:12,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-29 09:59:12,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 384 transitions. [2020-10-29 09:59:12,585 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 384 transitions. Word has length 126 [2020-10-29 09:59:12,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:12,585 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 384 transitions. [2020-10-29 09:59:12,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:59:12,586 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 384 transitions. [2020-10-29 09:59:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 09:59:12,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:12,587 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:12,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 09:59:12,588 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:12,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:12,588 INFO L82 PathProgramCache]: Analyzing trace with hash 169400894, now seen corresponding path program 10 times [2020-10-29 09:59:12,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:12,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395511701] [2020-10-29 09:59:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:12,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:12,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:12,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:13,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:13,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:14,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 09:59:17,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:59:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 09:59:17,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:59:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 09:59:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 09:59:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:18,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:18,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:18,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:18,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:18,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:18,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:18,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:18,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:18,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 109 proven. 483 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-10-29 09:59:18,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395511701] [2020-10-29 09:59:18,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:18,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:59:18,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128290637] [2020-10-29 09:59:18,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:59:18,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:18,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:59:18,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:59:18,244 INFO L87 Difference]: Start difference. First operand 306 states and 384 transitions. Second operand 18 states. [2020-10-29 09:59:19,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:19,746 INFO L93 Difference]: Finished difference Result 497 states and 619 transitions. [2020-10-29 09:59:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:59:19,748 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 126 [2020-10-29 09:59:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:19,751 INFO L225 Difference]: With dead ends: 497 [2020-10-29 09:59:19,751 INFO L226 Difference]: Without dead ends: 395 [2020-10-29 09:59:19,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:59:19,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-29 09:59:19,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 361. [2020-10-29 09:59:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-29 09:59:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 454 transitions. [2020-10-29 09:59:19,828 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 454 transitions. Word has length 126 [2020-10-29 09:59:19,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:19,829 INFO L481 AbstractCegarLoop]: Abstraction has 361 states and 454 transitions. [2020-10-29 09:59:19,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:59:19,829 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 454 transitions. [2020-10-29 09:59:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 09:59:19,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:19,831 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:19,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 09:59:19,831 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:19,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1526898566, now seen corresponding path program 11 times [2020-10-29 09:59:19,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:19,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764640854] [2020-10-29 09:59:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:19,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:19,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:19,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:20,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:21,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:24,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:24,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:24,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 09:59:24,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:59:24,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:59:24,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:24,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:59:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 09:59:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 09:59:24,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:25,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:59:25,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 162 proven. 398 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-29 09:59:25,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764640854] [2020-10-29 09:59:25,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:25,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:59:25,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196369320] [2020-10-29 09:59:25,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:59:25,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:25,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:59:25,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:59:25,335 INFO L87 Difference]: Start difference. First operand 361 states and 454 transitions. Second operand 16 states. [2020-10-29 09:59:26,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:26,611 INFO L93 Difference]: Finished difference Result 589 states and 738 transitions. [2020-10-29 09:59:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:59:26,612 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 126 [2020-10-29 09:59:26,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:26,615 INFO L225 Difference]: With dead ends: 589 [2020-10-29 09:59:26,615 INFO L226 Difference]: Without dead ends: 453 [2020-10-29 09:59:26,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:59:26,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-10-29 09:59:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 419. [2020-10-29 09:59:26,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-10-29 09:59:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 528 transitions. [2020-10-29 09:59:26,697 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 528 transitions. Word has length 126 [2020-10-29 09:59:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:26,698 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 528 transitions. [2020-10-29 09:59:26,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:59:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 528 transitions. [2020-10-29 09:59:26,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 09:59:26,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:26,700 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:26,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 09:59:26,701 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:26,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:26,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1398906690, now seen corresponding path program 12 times [2020-10-29 09:59:26,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:26,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682546321] [2020-10-29 09:59:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:26,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:26,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:26,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:27,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:27,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:29,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:31,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:31,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 09:59:31,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:59:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 09:59:31,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:31,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:59:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 09:59:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 09:59:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:32,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:32,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:32,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:32,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 209 proven. 313 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-29 09:59:32,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682546321] [2020-10-29 09:59:32,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:32,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:59:32,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790012820] [2020-10-29 09:59:32,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:59:32,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:32,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:59:32,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:59:32,184 INFO L87 Difference]: Start difference. First operand 419 states and 528 transitions. Second operand 14 states. [2020-10-29 09:59:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:33,200 INFO L93 Difference]: Finished difference Result 687 states and 865 transitions. [2020-10-29 09:59:33,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:59:33,201 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-29 09:59:33,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:33,205 INFO L225 Difference]: With dead ends: 687 [2020-10-29 09:59:33,205 INFO L226 Difference]: Without dead ends: 514 [2020-10-29 09:59:33,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:59:33,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-29 09:59:33,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 480. [2020-10-29 09:59:33,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-10-29 09:59:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 606 transitions. [2020-10-29 09:59:33,319 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 606 transitions. Word has length 126 [2020-10-29 09:59:33,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:33,319 INFO L481 AbstractCegarLoop]: Abstraction has 480 states and 606 transitions. [2020-10-29 09:59:33,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:59:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 606 transitions. [2020-10-29 09:59:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 09:59:33,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:33,322 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:33,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 09:59:33,322 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:33,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:33,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1971079674, now seen corresponding path program 13 times [2020-10-29 09:59:33,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:33,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937914875] [2020-10-29 09:59:33,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:33,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:33,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:34,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:35,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:35,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:36,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:36,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:38,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:38,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 09:59:38,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 09:59:38,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 09:59:38,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:38,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:38,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:59:38,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 09:59:38,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 09:59:38,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:38,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:38,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:38,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:38,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:38,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:59:38,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:38,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 250 proven. 228 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-10-29 09:59:38,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937914875] [2020-10-29 09:59:38,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:38,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:59:38,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488978060] [2020-10-29 09:59:38,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:59:38,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:38,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:59:38,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:59:38,698 INFO L87 Difference]: Start difference. First operand 480 states and 606 transitions. Second operand 12 states. [2020-10-29 09:59:39,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:39,504 INFO L93 Difference]: Finished difference Result 791 states and 1000 transitions. [2020-10-29 09:59:39,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:59:39,505 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-10-29 09:59:39,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:39,509 INFO L225 Difference]: With dead ends: 791 [2020-10-29 09:59:39,509 INFO L226 Difference]: Without dead ends: 578 [2020-10-29 09:59:39,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:59:39,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-29 09:59:39,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-10-29 09:59:39,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-10-29 09:59:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 688 transitions. [2020-10-29 09:59:39,615 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 688 transitions. Word has length 126 [2020-10-29 09:59:39,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:39,616 INFO L481 AbstractCegarLoop]: Abstraction has 544 states and 688 transitions. [2020-10-29 09:59:39,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:59:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 688 transitions. [2020-10-29 09:59:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 09:59:39,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:39,619 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:39,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 09:59:39,619 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:39,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:39,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1920661698, now seen corresponding path program 14 times [2020-10-29 09:59:39,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:39,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585552645] [2020-10-29 09:59:39,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:39,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:39,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:39,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:39,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:40,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:40,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:41,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:42,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:44,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:44,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 09:59:44,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:59:44,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 09:59:44,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:44,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:59:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 09:59:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 09:59:44,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:44,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:44,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:44,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:44,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:44,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:44,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:44,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:44,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:44,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:44,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:44,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 285 proven. 143 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-29 09:59:44,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585552645] [2020-10-29 09:59:44,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:44,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:59:44,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684150686] [2020-10-29 09:59:44,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:59:44,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:44,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:59:44,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:59:44,964 INFO L87 Difference]: Start difference. First operand 544 states and 688 transitions. Second operand 10 states. [2020-10-29 09:59:45,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:45,574 INFO L93 Difference]: Finished difference Result 901 states and 1143 transitions. [2020-10-29 09:59:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:59:45,575 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-10-29 09:59:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:45,578 INFO L225 Difference]: With dead ends: 901 [2020-10-29 09:59:45,579 INFO L226 Difference]: Without dead ends: 645 [2020-10-29 09:59:45,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:59:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-10-29 09:59:45,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 611. [2020-10-29 09:59:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-29 09:59:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 774 transitions. [2020-10-29 09:59:45,718 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 774 transitions. Word has length 126 [2020-10-29 09:59:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:45,719 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 774 transitions. [2020-10-29 09:59:45,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:59:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 774 transitions. [2020-10-29 09:59:45,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 09:59:45,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:45,721 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:45,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 09:59:45,722 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:45,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:45,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1854280570, now seen corresponding path program 15 times [2020-10-29 09:59:45,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:45,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105772639] [2020-10-29 09:59:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:45,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:45,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:45,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:46,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:46,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:50,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:50,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 09:59:50,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 09:59:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 09:59:50,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:50,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:59:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 09:59:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 09:59:50,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:50,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:50,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:50,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:50,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:50,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:59:50,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:50,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:50,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:59:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 314 proven. 58 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2020-10-29 09:59:51,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105772639] [2020-10-29 09:59:51,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:51,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:59:51,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515982616] [2020-10-29 09:59:51,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:59:51,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:51,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:59:51,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:59:51,075 INFO L87 Difference]: Start difference. First operand 611 states and 774 transitions. Second operand 8 states. [2020-10-29 09:59:51,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:51,633 INFO L93 Difference]: Finished difference Result 1017 states and 1294 transitions. [2020-10-29 09:59:51,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:59:51,633 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-29 09:59:51,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:51,637 INFO L225 Difference]: With dead ends: 1017 [2020-10-29 09:59:51,637 INFO L226 Difference]: Without dead ends: 715 [2020-10-29 09:59:51,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:59:51,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-10-29 09:59:51,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 681. [2020-10-29 09:59:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-10-29 09:59:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 864 transitions. [2020-10-29 09:59:51,801 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 864 transitions. Word has length 126 [2020-10-29 09:59:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:51,802 INFO L481 AbstractCegarLoop]: Abstraction has 681 states and 864 transitions. [2020-10-29 09:59:51,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:59:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 864 transitions. [2020-10-29 09:59:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 09:59:51,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:51,805 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:51,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 09:59:51,805 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:51,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:51,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1109253382, now seen corresponding path program 16 times [2020-10-29 09:59:51,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:51,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487826853] [2020-10-29 09:59:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:51,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:51,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:55,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:57,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 09:59:57,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:59:57,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5266 [2020-10-29 09:59:57,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:57,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:59:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:59:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:59:57,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:57,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:57,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:57,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:57,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:57,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:59:57,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:57,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:57,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:57,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:57,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2020-10-29 09:59:57,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487826853] [2020-10-29 09:59:57,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:59:57,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:59:57,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637653664] [2020-10-29 09:59:57,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:59:57,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:57,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:59:57,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:59:57,180 INFO L87 Difference]: Start difference. First operand 681 states and 864 transitions. Second operand 6 states. [2020-10-29 09:59:57,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:57,405 INFO L93 Difference]: Finished difference Result 1232 states and 1579 transitions. [2020-10-29 09:59:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:59:57,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2020-10-29 09:59:57,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:57,410 INFO L225 Difference]: With dead ends: 1232 [2020-10-29 09:59:57,410 INFO L226 Difference]: Without dead ends: 565 [2020-10-29 09:59:57,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:59:57,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-29 09:59:57,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 561. [2020-10-29 09:59:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-29 09:59:57,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 725 transitions. [2020-10-29 09:59:57,542 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 725 transitions. Word has length 126 [2020-10-29 09:59:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:57,542 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 725 transitions. [2020-10-29 09:59:57,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:59:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 725 transitions. [2020-10-29 09:59:57,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 09:59:57,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:57,545 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 9, 9, 9, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:57,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 09:59:57,545 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:57,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:57,546 INFO L82 PathProgramCache]: Analyzing trace with hash -485485124, now seen corresponding path program 1 times [2020-10-29 09:59:57,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:57,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435100345] [2020-10-29 09:59:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:57,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:02,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 10:00:02,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 10:00:02,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-29 10:00:02,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:02,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:02,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 10:00:02,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 10:00:02,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 10:00:02,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:02,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:03,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:03,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:03,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:03,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:03,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:03,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:03,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:03,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:03,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:03,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 447 proven. 232 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-29 10:00:03,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435100345] [2020-10-29 10:00:03,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:03,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 10:00:03,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775926447] [2020-10-29 10:00:03,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 10:00:03,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:03,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 10:00:03,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-29 10:00:03,030 INFO L87 Difference]: Start difference. First operand 561 states and 725 transitions. Second operand 21 states. [2020-10-29 10:00:03,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:03,934 INFO L93 Difference]: Finished difference Result 1121 states and 1479 transitions. [2020-10-29 10:00:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 10:00:03,935 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 126 [2020-10-29 10:00:03,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:03,939 INFO L225 Difference]: With dead ends: 1121 [2020-10-29 10:00:03,940 INFO L226 Difference]: Without dead ends: 678 [2020-10-29 10:00:03,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=295, Invalid=1037, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 10:00:03,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-10-29 10:00:04,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 630. [2020-10-29 10:00:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-10-29 10:00:04,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 815 transitions. [2020-10-29 10:00:04,096 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 815 transitions. Word has length 126 [2020-10-29 10:00:04,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:04,096 INFO L481 AbstractCegarLoop]: Abstraction has 630 states and 815 transitions. [2020-10-29 10:00:04,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 10:00:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 815 transitions. [2020-10-29 10:00:04,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 10:00:04,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:04,099 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 9, 9, 9, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:04,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 10:00:04,099 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:04,100 INFO L82 PathProgramCache]: Analyzing trace with hash -2051014953, now seen corresponding path program 2 times [2020-10-29 10:00:04,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:04,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510443914] [2020-10-29 10:00:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:05,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:06,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:06,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:08,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:09,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 10:00:09,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 10:00:09,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 10:00:09,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:09,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 10:00:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 10:00:09,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:09,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:09,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:09,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:09,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:09,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:09,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:09,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:09,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:09,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 424 proven. 301 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2020-10-29 10:00:09,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510443914] [2020-10-29 10:00:09,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:09,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 10:00:09,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80533636] [2020-10-29 10:00:09,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 10:00:09,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:09,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 10:00:09,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:00:09,412 INFO L87 Difference]: Start difference. First operand 630 states and 815 transitions. Second operand 13 states. [2020-10-29 10:00:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:09,966 INFO L93 Difference]: Finished difference Result 1239 states and 1635 transitions. [2020-10-29 10:00:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 10:00:09,967 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 135 [2020-10-29 10:00:09,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:09,971 INFO L225 Difference]: With dead ends: 1239 [2020-10-29 10:00:09,971 INFO L226 Difference]: Without dead ends: 750 [2020-10-29 10:00:09,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-10-29 10:00:09,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-10-29 10:00:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 702. [2020-10-29 10:00:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-10-29 10:00:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 911 transitions. [2020-10-29 10:00:10,140 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 911 transitions. Word has length 135 [2020-10-29 10:00:10,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:10,140 INFO L481 AbstractCegarLoop]: Abstraction has 702 states and 911 transitions. [2020-10-29 10:00:10,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 10:00:10,141 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 911 transitions. [2020-10-29 10:00:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 10:00:10,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:10,143 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 9, 9, 9, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:10,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 10:00:10,143 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:10,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:10,144 INFO L82 PathProgramCache]: Analyzing trace with hash 779400220, now seen corresponding path program 3 times [2020-10-29 10:00:10,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:10,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735577174] [2020-10-29 10:00:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:10,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:11,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:13,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:15,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 10:00:15,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 10:00:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 10:00:15,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:15,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 10:00:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 10:00:15,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:15,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:15,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:15,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:15,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:15,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:15,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:15,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:15,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 5 proven. 641 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2020-10-29 10:00:15,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735577174] [2020-10-29 10:00:15,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:15,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 10:00:15,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648511490] [2020-10-29 10:00:15,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 10:00:15,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:15,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 10:00:15,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:00:15,451 INFO L87 Difference]: Start difference. First operand 702 states and 911 transitions. Second operand 14 states. [2020-10-29 10:00:15,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:15,956 INFO L93 Difference]: Finished difference Result 1359 states and 1795 transitions. [2020-10-29 10:00:15,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 10:00:15,957 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 144 [2020-10-29 10:00:15,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:15,961 INFO L225 Difference]: With dead ends: 1359 [2020-10-29 10:00:15,962 INFO L226 Difference]: Without dead ends: 822 [2020-10-29 10:00:15,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-10-29 10:00:15,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-10-29 10:00:16,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 774. [2020-10-29 10:00:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-10-29 10:00:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1007 transitions. [2020-10-29 10:00:16,155 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1007 transitions. Word has length 144 [2020-10-29 10:00:16,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:16,155 INFO L481 AbstractCegarLoop]: Abstraction has 774 states and 1007 transitions. [2020-10-29 10:00:16,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 10:00:16,155 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1007 transitions. [2020-10-29 10:00:16,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 10:00:16,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:16,157 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 9, 9, 9, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:16,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 10:00:16,158 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:16,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:16,158 INFO L82 PathProgramCache]: Analyzing trace with hash 89227639, now seen corresponding path program 4 times [2020-10-29 10:00:16,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:16,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077037844] [2020-10-29 10:00:16,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:16,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:16,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:17,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:19,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:20,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:20,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:21,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:21,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 10:00:21,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 10:00:21,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 10:00:21,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:21,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 10:00:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 10:00:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 10:00:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:21,620 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-10-29 10:00:21,791 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-10-29 10:00:22,028 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 52 [2020-10-29 10:00:22,162 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-29 10:00:22,443 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 46 [2020-10-29 10:00:22,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:22,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:22,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:22,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:22,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:00:22,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:22,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:00:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:00:22,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 646 proven. 32 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2020-10-29 10:00:22,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077037844] [2020-10-29 10:00:22,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:22,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 10:00:22,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280973598] [2020-10-29 10:00:22,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 10:00:22,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:22,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 10:00:22,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-29 10:00:22,690 INFO L87 Difference]: Start difference. First operand 774 states and 1007 transitions. Second operand 11 states. [2020-10-29 10:00:22,898 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-29 10:00:23,034 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-29 10:00:23,192 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-10-29 10:00:23,387 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2020-10-29 10:00:23,578 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-29 10:00:23,798 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-10-29 10:00:24,040 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-29 10:00:24,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:24,415 INFO L93 Difference]: Finished difference Result 1462 states and 1904 transitions. [2020-10-29 10:00:24,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 10:00:24,416 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 153 [2020-10-29 10:00:24,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:24,421 INFO L225 Difference]: With dead ends: 1462 [2020-10-29 10:00:24,421 INFO L226 Difference]: Without dead ends: 741 [2020-10-29 10:00:24,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:00:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-10-29 10:00:24,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2020-10-29 10:00:24,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2020-10-29 10:00:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 963 transitions. [2020-10-29 10:00:24,596 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 963 transitions. Word has length 153 [2020-10-29 10:00:24,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:24,596 INFO L481 AbstractCegarLoop]: Abstraction has 741 states and 963 transitions. [2020-10-29 10:00:24,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 10:00:24,597 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 963 transitions. [2020-10-29 10:00:24,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 10:00:24,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:24,599 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 9, 9, 9, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:24,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 10:00:24,599 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:24,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:24,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1706668089, now seen corresponding path program 1 times [2020-10-29 10:00:24,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:24,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556849327] [2020-10-29 10:00:24,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:24,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:24,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:24,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:25,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:29,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:29,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 10:00:29,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 10:00:29,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-29 10:00:29,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:29,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 10:00:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 10:00:29,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:29,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:30,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:30,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:30,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:30,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:00:30,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:30,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:30,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 648 proven. 466 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2020-10-29 10:00:30,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556849327] [2020-10-29 10:00:30,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:30,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 10:00:30,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773740189] [2020-10-29 10:00:30,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 10:00:30,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:30,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 10:00:30,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:00:30,041 INFO L87 Difference]: Start difference. First operand 741 states and 963 transitions. Second operand 15 states. [2020-10-29 10:00:30,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:30,639 INFO L93 Difference]: Finished difference Result 1437 states and 1899 transitions. [2020-10-29 10:00:30,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 10:00:30,640 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 153 [2020-10-29 10:00:30,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:30,645 INFO L225 Difference]: With dead ends: 1437 [2020-10-29 10:00:30,645 INFO L226 Difference]: Without dead ends: 856 [2020-10-29 10:00:30,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2020-10-29 10:00:30,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2020-10-29 10:00:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 810. [2020-10-29 10:00:30,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2020-10-29 10:00:30,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1055 transitions. [2020-10-29 10:00:30,785 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1055 transitions. Word has length 153 [2020-10-29 10:00:30,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:30,786 INFO L481 AbstractCegarLoop]: Abstraction has 810 states and 1055 transitions. [2020-10-29 10:00:30,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 10:00:30,786 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1055 transitions. [2020-10-29 10:00:30,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-29 10:00:30,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:30,788 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 9, 9, 9, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:30,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 10:00:30,788 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:30,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:30,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1945008646, now seen corresponding path program 2 times [2020-10-29 10:00:30,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:30,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871454684] [2020-10-29 10:00:30,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:30,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:30,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:30,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:32,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:33,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:35,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:35,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 10:00:35,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 10:00:35,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 10:00:35,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:35,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:35,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 10:00:35,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:35,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 10:00:35,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:36,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:36,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:36,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:36,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:36,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:36,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:36,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:36,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:36,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 778 proven. 562 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-29 10:00:36,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871454684] [2020-10-29 10:00:36,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:36,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 10:00:36,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799971223] [2020-10-29 10:00:36,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 10:00:36,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:36,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 10:00:36,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:00:36,164 INFO L87 Difference]: Start difference. First operand 810 states and 1055 transitions. Second operand 16 states. [2020-10-29 10:00:36,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:36,720 INFO L93 Difference]: Finished difference Result 1554 states and 2055 transitions. [2020-10-29 10:00:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 10:00:36,721 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 162 [2020-10-29 10:00:36,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:36,727 INFO L225 Difference]: With dead ends: 1554 [2020-10-29 10:00:36,727 INFO L226 Difference]: Without dead ends: 925 [2020-10-29 10:00:36,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-10-29 10:00:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2020-10-29 10:00:36,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 879. [2020-10-29 10:00:36,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-10-29 10:00:36,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1147 transitions. [2020-10-29 10:00:36,925 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1147 transitions. Word has length 162 [2020-10-29 10:00:36,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:36,925 INFO L481 AbstractCegarLoop]: Abstraction has 879 states and 1147 transitions. [2020-10-29 10:00:36,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 10:00:36,925 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1147 transitions. [2020-10-29 10:00:36,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 10:00:36,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:36,928 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 9, 9, 9, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:36,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 10:00:36,928 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:36,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:36,928 INFO L82 PathProgramCache]: Analyzing trace with hash 429809241, now seen corresponding path program 3 times [2020-10-29 10:00:36,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:36,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015259279] [2020-10-29 10:00:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:36,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:37,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:38,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:39,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:42,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:42,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 10:00:42,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 10:00:42,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-29 10:00:42,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:42,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:42,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 10:00:42,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:42,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 10:00:42,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:42,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:42,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:42,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:42,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:42,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:42,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:42,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:42,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:42,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 920 proven. 667 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2020-10-29 10:00:42,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015259279] [2020-10-29 10:00:42,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:42,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 10:00:42,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107640928] [2020-10-29 10:00:42,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 10:00:42,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:42,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 10:00:42,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-29 10:00:42,384 INFO L87 Difference]: Start difference. First operand 879 states and 1147 transitions. Second operand 17 states. [2020-10-29 10:00:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:43,114 INFO L93 Difference]: Finished difference Result 1671 states and 2211 transitions. [2020-10-29 10:00:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 10:00:43,115 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 171 [2020-10-29 10:00:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:43,121 INFO L225 Difference]: With dead ends: 1671 [2020-10-29 10:00:43,121 INFO L226 Difference]: Without dead ends: 994 [2020-10-29 10:00:43,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2020-10-29 10:00:43,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2020-10-29 10:00:43,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 948. [2020-10-29 10:00:43,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-10-29 10:00:43,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1239 transitions. [2020-10-29 10:00:43,267 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1239 transitions. Word has length 171 [2020-10-29 10:00:43,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:43,268 INFO L481 AbstractCegarLoop]: Abstraction has 948 states and 1239 transitions. [2020-10-29 10:00:43,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 10:00:43,268 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1239 transitions. [2020-10-29 10:00:43,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-29 10:00:43,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:43,270 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 9, 9, 9, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:43,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 10:00:43,270 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:43,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:43,271 INFO L82 PathProgramCache]: Analyzing trace with hash 895307994, now seen corresponding path program 4 times [2020-10-29 10:00:43,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:43,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158805265] [2020-10-29 10:00:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:43,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:47,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:48,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:48,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-29 10:00:48,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 10:00:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-10-29 10:00:48,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:48,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 10:00:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 10:00:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:48,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:48,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:48,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:48,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:48,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:48,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:48,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:48,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:48,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2481 backedges. 5 proven. 1315 refuted. 0 times theorem prover too weak. 1161 trivial. 0 not checked. [2020-10-29 10:00:48,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158805265] [2020-10-29 10:00:48,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:48,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 10:00:48,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669971382] [2020-10-29 10:00:48,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 10:00:48,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:48,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 10:00:48,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-29 10:00:48,818 INFO L87 Difference]: Start difference. First operand 948 states and 1239 transitions. Second operand 18 states. [2020-10-29 10:00:49,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:49,612 INFO L93 Difference]: Finished difference Result 1788 states and 2367 transitions. [2020-10-29 10:00:49,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 10:00:49,613 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 180 [2020-10-29 10:00:49,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:49,618 INFO L225 Difference]: With dead ends: 1788 [2020-10-29 10:00:49,618 INFO L226 Difference]: Without dead ends: 1063 [2020-10-29 10:00:49,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2020-10-29 10:00:49,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-10-29 10:00:49,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1017. [2020-10-29 10:00:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2020-10-29 10:00:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1331 transitions. [2020-10-29 10:00:49,780 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1331 transitions. Word has length 180 [2020-10-29 10:00:49,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:49,780 INFO L481 AbstractCegarLoop]: Abstraction has 1017 states and 1331 transitions. [2020-10-29 10:00:49,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 10:00:49,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1331 transitions. [2020-10-29 10:00:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 10:00:49,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:49,782 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 9, 9, 9, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:49,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 10:00:49,783 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:49,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:49,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1813759097, now seen corresponding path program 5 times [2020-10-29 10:00:49,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:49,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31324137] [2020-10-29 10:00:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:51,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking...