/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=SHALLOWEST --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/array-examples/standard_find_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:21:32,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:21:32,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:21:32,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:21:32,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:21:32,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:21:32,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:21:32,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:21:32,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:21:32,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:21:32,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:21:32,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:21:32,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:21:32,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:21:32,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:21:32,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:21:32,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:21:32,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:21:32,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:21:32,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:21:32,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:21:32,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:21:32,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:21:32,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:21:32,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:21:32,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:21:32,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:21:32,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:21:32,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:21:32,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:21:32,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:21:32,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:21:32,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:21:32,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:21:32,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:21:32,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:21:32,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:21:32,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:21:32,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:21:32,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:21:32,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:21:32,601 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 [2020-10-26 19:21:32,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:21:32,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:21:32,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:21:32,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:21:32,629 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:21:32,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:21:32,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:21:32,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:21:32,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:21:32,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:21:32,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:21:32,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:21:32,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:21:32,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:21:32,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:21:32,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:21:32,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:21:32,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:21:32,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:21:32,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:21:32,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:21:32,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:21:32,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:21:32,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:21:32,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:21:32,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:21:32,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:21:32,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:21:32,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:21:32,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:21:33,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:21:33,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:21:33,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:21:33,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:21:33,075 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:21:33,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_find_ground-1.i [2020-10-26 19:21:33,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a85e83d5/bc3ba6e1af6b406097dade08a0fe3984/FLAG0b4652fd8 [2020-10-26 19:21:33,765 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:21:33,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_find_ground-1.i [2020-10-26 19:21:33,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a85e83d5/bc3ba6e1af6b406097dade08a0fe3984/FLAG0b4652fd8 [2020-10-26 19:21:34,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a85e83d5/bc3ba6e1af6b406097dade08a0fe3984 [2020-10-26 19:21:34,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:21:34,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:21:34,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:21:34,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:21:34,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:21:34,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:21:34" (1/1) ... [2020-10-26 19:21:34,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2675cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:34, skipping insertion in model container [2020-10-26 19:21:34,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:21:34" (1/1) ... [2020-10-26 19:21:34,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:21:34,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:21:34,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:21:34,362 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:21:34,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:21:34,403 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:21:34,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:34 WrapperNode [2020-10-26 19:21:34,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:21:34,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:21:34,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:21:34,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:21:34,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:34" (1/1) ... [2020-10-26 19:21:34,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:34" (1/1) ... [2020-10-26 19:21:34,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:34" (1/1) ... [2020-10-26 19:21:34,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:34" (1/1) ... [2020-10-26 19:21:34,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:34" (1/1) ... [2020-10-26 19:21:34,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:34" (1/1) ... [2020-10-26 19:21:34,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:34" (1/1) ... [2020-10-26 19:21:34,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:21:34,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:21:34,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:21:34,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:21:34,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:34" (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 [2020-10-26 19:21:34,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:21:34,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:21:34,610 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:21:34,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:21:34,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:21:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:21:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:21:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 19:21:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 19:21:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:21:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:21:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:21:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:21:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:21:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:21:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:21:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:21:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:21:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:21:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:21:35,184 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:21:35,185 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 19:21:35,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:21:35 BoogieIcfgContainer [2020-10-26 19:21:35,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:21:35,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:21:35,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:21:35,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:21:35,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:21:34" (1/3) ... [2020-10-26 19:21:35,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45242929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:21:35, skipping insertion in model container [2020-10-26 19:21:35,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:34" (2/3) ... [2020-10-26 19:21:35,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45242929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:21:35, skipping insertion in model container [2020-10-26 19:21:35,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:21:35" (3/3) ... [2020-10-26 19:21:35,201 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_find_ground-1.i [2020-10-26 19:21:35,216 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:21:35,226 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:21:35,241 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:21:35,286 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:21:35,286 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:21:35,286 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:21:35,286 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:21:35,286 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:21:35,287 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:21:35,287 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:21:35,287 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:21:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-26 19:21:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 19:21:35,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:35,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:35,322 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:35,331 INFO L82 PathProgramCache]: Analyzing trace with hash -32220967, now seen corresponding path program 1 times [2020-10-26 19:21:35,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:35,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278894798] [2020-10-26 19:21:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:35,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:35,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:35,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:35,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:35,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-26 19:21:35,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:21:35,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-26 19:21:35,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:21:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-26 19:21:35,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-26 19:21:36,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:36,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:36,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:36,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:36,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:36,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 19:21:36,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:36,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:36,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:36,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:36,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:21:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:21:36,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278894798] [2020-10-26 19:21:36,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:21:36,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:21:36,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875910009] [2020-10-26 19:21:36,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:21:36,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:36,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:21:36,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:21:36,080 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2020-10-26 19:21:36,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:36,298 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2020-10-26 19:21:36,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:21:36,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-26 19:21:36,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:36,309 INFO L225 Difference]: With dead ends: 61 [2020-10-26 19:21:36,309 INFO L226 Difference]: Without dead ends: 27 [2020-10-26 19:21:36,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:21:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-26 19:21:36,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-26 19:21:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-26 19:21:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-26 19:21:36,356 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2020-10-26 19:21:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:36,356 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-26 19:21:36,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:21:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-26 19:21:36,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 19:21:36,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:36,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:36,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:21:36,359 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:36,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:36,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1263671326, now seen corresponding path program 1 times [2020-10-26 19:21:36,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:36,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281704946] [2020-10-26 19:21:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:36,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:36,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:36,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-26 19:21:36,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-26 19:21:36,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:36,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:21:36,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:36,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 19:21:36,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:36,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:36,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:36,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:36,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:36,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:21:36,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:36,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:36,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:36,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 19:21:36,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281704946] [2020-10-26 19:21:36,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:21:36,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:21:36,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073253547] [2020-10-26 19:21:36,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:21:36,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:36,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:21:36,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:21:36,920 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-26 19:21:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:37,050 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-10-26 19:21:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:21:37,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-26 19:21:37,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:37,053 INFO L225 Difference]: With dead ends: 48 [2020-10-26 19:21:37,053 INFO L226 Difference]: Without dead ends: 29 [2020-10-26 19:21:37,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:21:37,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-26 19:21:37,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-26 19:21:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-26 19:21:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-26 19:21:37,063 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 21 [2020-10-26 19:21:37,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:37,064 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-26 19:21:37,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:21:37,064 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-26 19:21:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 19:21:37,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:37,065 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:37,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:21:37,066 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:37,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:37,067 INFO L82 PathProgramCache]: Analyzing trace with hash -62400388, now seen corresponding path program 1 times [2020-10-26 19:21:37,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:37,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025542965] [2020-10-26 19:21:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:37,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:37,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:37,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 19:21:37,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:37,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-26 19:21:37,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:37,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:21:37,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:37,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-26 19:21:37,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:37,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:37,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:37,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:37,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:37,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:37,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:21:37,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:37,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:37,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:37,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:37,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 19:21:37,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025542965] [2020-10-26 19:21:37,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:21:37,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 19:21:37,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865908664] [2020-10-26 19:21:37,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:21:37,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:37,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:21:37,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:21:37,712 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-26 19:21:37,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:37,844 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-26 19:21:37,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:21:37,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-26 19:21:37,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:37,846 INFO L225 Difference]: With dead ends: 50 [2020-10-26 19:21:37,846 INFO L226 Difference]: Without dead ends: 31 [2020-10-26 19:21:37,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:21:37,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-26 19:21:37,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-26 19:21:37,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-26 19:21:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-26 19:21:37,854 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 23 [2020-10-26 19:21:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:37,855 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-26 19:21:37,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:21:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-26 19:21:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 19:21:37,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:37,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:37,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 19:21:37,857 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:37,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:37,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1187969370, now seen corresponding path program 2 times [2020-10-26 19:21:37,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:37,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286518298] [2020-10-26 19:21:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:37,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:38,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:38,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 19:21:38,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:38,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-26 19:21:38,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:38,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 19:21:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 19:21:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:38,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:38,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:38,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:38,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:38,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:21:38,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:38,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 19:21:38,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286518298] [2020-10-26 19:21:38,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:21:38,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 19:21:38,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595156453] [2020-10-26 19:21:38,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:21:38,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:38,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:21:38,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:21:38,781 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 10 states. [2020-10-26 19:21:39,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:39,215 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-10-26 19:21:39,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 19:21:39,216 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-26 19:21:39,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:39,217 INFO L225 Difference]: With dead ends: 42 [2020-10-26 19:21:39,217 INFO L226 Difference]: Without dead ends: 38 [2020-10-26 19:21:39,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:21:39,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-26 19:21:39,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-26 19:21:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 19:21:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-26 19:21:39,228 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 25 [2020-10-26 19:21:39,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:39,229 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-26 19:21:39,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:21:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-26 19:21:39,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-26 19:21:39,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:39,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:39,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 19:21:39,231 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:39,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:39,232 INFO L82 PathProgramCache]: Analyzing trace with hash -615467084, now seen corresponding path program 1 times [2020-10-26 19:21:39,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:39,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7117847] [2020-10-26 19:21:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:39,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:39,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:39,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-26 19:21:39,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-26 19:21:39,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:21:39,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:39,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:21:39,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:39,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:39,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:39,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:39,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:39,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:39,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:21:39,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:39,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:39,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 19:21:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:39,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:39,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:39,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:39,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:39,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:21:39,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:21:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 19:21:39,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7117847] [2020-10-26 19:21:39,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:21:39,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 19:21:39,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121723545] [2020-10-26 19:21:39,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 19:21:39,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:39,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 19:21:39,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:21:39,700 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 6 states. [2020-10-26 19:21:39,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:39,829 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2020-10-26 19:21:39,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:21:39,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-26 19:21:39,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:39,833 INFO L225 Difference]: With dead ends: 64 [2020-10-26 19:21:39,833 INFO L226 Difference]: Without dead ends: 39 [2020-10-26 19:21:39,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:21:39,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-26 19:21:39,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-26 19:21:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-26 19:21:39,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-26 19:21:39,842 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 33 [2020-10-26 19:21:39,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:39,843 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-26 19:21:39,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 19:21:39,843 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-26 19:21:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-26 19:21:39,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:39,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:39,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 19:21:39,847 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:39,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:39,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1648174318, now seen corresponding path program 2 times [2020-10-26 19:21:39,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:39,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476118678] [2020-10-26 19:21:39,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:39,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:39,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:40,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:40,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-26 19:21:40,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:40,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-26 19:21:40,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 19:21:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 19:21:40,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:40,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:40,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:40,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:40,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:40,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:40,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:21:40,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:40,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:40,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-26 19:21:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:40,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:40,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:40,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:40,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:40,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:21:40,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:40,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:40,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:21:40,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:40,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 19:21:40,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476118678] [2020-10-26 19:21:40,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:21:40,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 19:21:40,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582715243] [2020-10-26 19:21:40,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 19:21:40,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:40,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 19:21:40,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:21:40,466 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 7 states. [2020-10-26 19:21:40,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:40,640 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-10-26 19:21:40,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 19:21:40,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-26 19:21:40,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:40,643 INFO L225 Difference]: With dead ends: 66 [2020-10-26 19:21:40,643 INFO L226 Difference]: Without dead ends: 41 [2020-10-26 19:21:40,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:21:40,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-26 19:21:40,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-26 19:21:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 19:21:40,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-26 19:21:40,660 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 35 [2020-10-26 19:21:40,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:40,661 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-26 19:21:40,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 19:21:40,661 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-26 19:21:40,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-26 19:21:40,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:40,662 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:40,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 19:21:40,663 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:40,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:40,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1942380816, now seen corresponding path program 3 times [2020-10-26 19:21:40,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:40,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47107105] [2020-10-26 19:21:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:40,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:40,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:41,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:41,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 19:21:41,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-26 19:21:41,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 19:21:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 19:21:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:41,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:41,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:41,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:41,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:41,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:41,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:21:41,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:41,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:41,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-26 19:21:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:41,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:41,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:41,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:41,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:41,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:21:41,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:41,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:41,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:21:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:41,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 19:21:41,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47107105] [2020-10-26 19:21:41,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:21:41,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 19:21:41,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781249933] [2020-10-26 19:21:41,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 19:21:41,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:41,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 19:21:41,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:21:41,447 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 8 states. [2020-10-26 19:21:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:41,599 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-26 19:21:41,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 19:21:41,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-10-26 19:21:41,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:41,600 INFO L225 Difference]: With dead ends: 68 [2020-10-26 19:21:41,601 INFO L226 Difference]: Without dead ends: 43 [2020-10-26 19:21:41,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:21:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-26 19:21:41,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-26 19:21:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 19:21:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-26 19:21:41,609 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 37 [2020-10-26 19:21:41,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:41,609 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-26 19:21:41,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 19:21:41,610 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-26 19:21:41,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-26 19:21:41,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:41,611 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:41,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 19:21:41,612 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:41,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:41,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1206983858, now seen corresponding path program 4 times [2020-10-26 19:21:41,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:41,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609939067] [2020-10-26 19:21:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:41,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:42,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:42,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 19:21:42,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:42,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-26 19:21:42,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 19:21:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 19:21:42,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:42,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:42,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:42,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:42,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:42,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:21:42,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:42,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:42,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:42,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:42,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:42,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:21:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:42,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:42,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:42,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:42,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:42,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:21:42,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:42,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:21:42,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:42,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:21:42,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-26 19:21:42,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609939067] [2020-10-26 19:21:42,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:21:42,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 19:21:42,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417309836] [2020-10-26 19:21:42,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 19:21:42,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:42,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 19:21:42,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:21:42,421 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 7 states. [2020-10-26 19:21:42,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:42,648 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-10-26 19:21:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 19:21:42,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-26 19:21:42,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:42,650 INFO L225 Difference]: With dead ends: 63 [2020-10-26 19:21:42,650 INFO L226 Difference]: Without dead ends: 45 [2020-10-26 19:21:42,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 19:21:42,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-26 19:21:42,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-26 19:21:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-26 19:21:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-26 19:21:42,662 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 39 [2020-10-26 19:21:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:42,663 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-26 19:21:42,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 19:21:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-26 19:21:42,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-26 19:21:42,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:42,664 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:42,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 19:21:42,665 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:42,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:42,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1245724356, now seen corresponding path program 5 times [2020-10-26 19:21:42,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:42,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332910395] [2020-10-26 19:21:42,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:42,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:42,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:44,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:44,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-26 19:21:44,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:44,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1885 [2020-10-26 19:21:44,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 19:21:44,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:44,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 19:21:44,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:44,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:44,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:44,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:44,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:21:44,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:44,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:21:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-26 19:21:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:44,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:44,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:44,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:44,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 19:21:44,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:21:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:21:44,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:21:44,986 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-26 19:21:44,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332910395] [2020-10-26 19:21:44,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:21:44,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:21:44,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455671403] [2020-10-26 19:21:44,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:21:44,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:45,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:21:45,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:21:45,002 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 12 states. [2020-10-26 19:21:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:45,862 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-26 19:21:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 19:21:45,862 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-10-26 19:21:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:45,864 INFO L225 Difference]: With dead ends: 67 [2020-10-26 19:21:45,864 INFO L226 Difference]: Without dead ends: 50 [2020-10-26 19:21:45,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:21:45,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-26 19:21:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-26 19:21:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-26 19:21:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-10-26 19:21:45,872 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 42 [2020-10-26 19:21:45,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:45,872 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-10-26 19:21:45,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:21:45,872 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-10-26 19:21:45,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-26 19:21:45,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:45,874 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:45,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 19:21:45,874 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:45,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:45,874 INFO L82 PathProgramCache]: Analyzing trace with hash -17697650, now seen corresponding path program 6 times [2020-10-26 19:21:45,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:45,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642983018] [2020-10-26 19:21:45,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:47,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:47,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-26 19:21:47,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:47,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1877 [2020-10-26 19:21:47,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 19:21:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-26 19:21:47,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:47,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:47,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:47,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:47,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:47,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:21:47,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:47,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:47,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-26 19:21:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:47,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:47,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:47,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:47,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:21:47,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:47,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:21:47,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:21:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-26 19:21:47,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642983018] [2020-10-26 19:21:47,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:21:47,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:21:47,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734049885] [2020-10-26 19:21:47,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:21:47,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:47,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:21:47,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:21:47,934 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 12 states. [2020-10-26 19:21:48,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:48,284 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-26 19:21:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 19:21:48,285 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-26 19:21:48,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:48,287 INFO L225 Difference]: With dead ends: 68 [2020-10-26 19:21:48,287 INFO L226 Difference]: Without dead ends: 64 [2020-10-26 19:21:48,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:21:48,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-26 19:21:48,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2020-10-26 19:21:48,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-26 19:21:48,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-10-26 19:21:48,297 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 45 [2020-10-26 19:21:48,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:48,297 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-10-26 19:21:48,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:21:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-10-26 19:21:48,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-26 19:21:48,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:48,299 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:48,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 19:21:48,299 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:48,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:48,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2010169624, now seen corresponding path program 7 times [2020-10-26 19:21:48,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:48,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27275199] [2020-10-26 19:21:48,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:48,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:49,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:49,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-26 19:21:49,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:49,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1362 [2020-10-26 19:21:49,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:49,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 19:21:49,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:49,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 19:21:49,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:49,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:49,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:49,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:49,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:49,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:21:49,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:49,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-26 19:21:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:49,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:49,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:49,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:49,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:49,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:21:49,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:21:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:49,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:49,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:21:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:49,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:49,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:49,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:49,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:49,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:21:49,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:21:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:49,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-26 19:21:49,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27275199] [2020-10-26 19:21:49,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:21:49,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 19:21:49,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023918862] [2020-10-26 19:21:49,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 19:21:49,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:49,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 19:21:49,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-26 19:21:49,782 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 9 states. [2020-10-26 19:21:49,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:49,873 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-10-26 19:21:49,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 19:21:49,873 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-26 19:21:49,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:49,875 INFO L225 Difference]: With dead ends: 100 [2020-10-26 19:21:49,875 INFO L226 Difference]: Without dead ends: 60 [2020-10-26 19:21:49,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-26 19:21:49,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-26 19:21:49,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-26 19:21:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-26 19:21:49,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-26 19:21:49,884 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 53 [2020-10-26 19:21:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:49,884 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-26 19:21:49,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 19:21:49,884 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-26 19:21:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-26 19:21:49,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:49,886 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:49,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 19:21:49,886 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:49,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:49,887 INFO L82 PathProgramCache]: Analyzing trace with hash 660342598, now seen corresponding path program 8 times [2020-10-26 19:21:49,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:49,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329531029] [2020-10-26 19:21:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:49,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:50,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:51,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:51,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-26 19:21:51,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:51,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1588 [2020-10-26 19:21:51,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 19:21:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:51,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 19:21:51,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:21:51,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:51,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:51,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:51,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:51,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:21:51,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:51,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:51,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-26 19:21:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:51,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:51,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:51,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:51,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:51,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:21:51,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:51,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:51,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:21:51,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:51,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:51,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:21:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:51,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:51,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:51,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:51,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:21:51,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:21:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-26 19:21:51,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329531029] [2020-10-26 19:21:51,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:21:51,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 19:21:51,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249330465] [2020-10-26 19:21:51,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:21:51,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:51,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:21:51,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:21:51,654 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 10 states. [2020-10-26 19:21:51,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:51,771 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2020-10-26 19:21:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 19:21:51,772 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-26 19:21:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:51,773 INFO L225 Difference]: With dead ends: 102 [2020-10-26 19:21:51,773 INFO L226 Difference]: Without dead ends: 62 [2020-10-26 19:21:51,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:21:51,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-26 19:21:51,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-26 19:21:51,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-26 19:21:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-10-26 19:21:51,790 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 55 [2020-10-26 19:21:51,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:51,791 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-10-26 19:21:51,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:21:51,791 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-10-26 19:21:51,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-26 19:21:51,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:51,796 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:51,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 19:21:51,797 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:51,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1367855068, now seen corresponding path program 9 times [2020-10-26 19:21:51,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:51,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819309] [2020-10-26 19:21:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:52,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:53,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:53,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 19:21:53,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:53,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1725 [2020-10-26 19:21:53,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 19:21:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-26 19:21:53,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:53,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:53,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:53,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:53,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:53,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:53,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:21:53,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:53,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:53,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 19:21:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:53,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:53,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:53,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:53,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:53,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:21:53,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:53,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:21:53,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:53,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:21:53,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:53,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:21:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:53,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:53,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:53,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:53,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:53,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:21:53,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:53,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:21:53,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:53,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:21:53,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-26 19:21:53,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819309] [2020-10-26 19:21:53,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:21:53,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:21:53,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943140576] [2020-10-26 19:21:53,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:21:53,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:53,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:21:53,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:21:53,812 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 14 states. [2020-10-26 19:21:54,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:54,251 INFO L93 Difference]: Finished difference Result 95 states and 109 transitions. [2020-10-26 19:21:54,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 19:21:54,252 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-10-26 19:21:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:54,253 INFO L225 Difference]: With dead ends: 95 [2020-10-26 19:21:54,253 INFO L226 Difference]: Without dead ends: 74 [2020-10-26 19:21:54,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:21:54,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-26 19:21:54,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2020-10-26 19:21:54,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-26 19:21:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-10-26 19:21:54,266 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 57 [2020-10-26 19:21:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:54,267 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-10-26 19:21:54,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:21:54,267 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-10-26 19:21:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-26 19:21:54,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:54,269 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:54,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 19:21:54,269 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:54,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:54,270 INFO L82 PathProgramCache]: Analyzing trace with hash 150395290, now seen corresponding path program 10 times [2020-10-26 19:21:54,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:54,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871593919] [2020-10-26 19:21:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:54,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:54,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:56,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:56,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 19:21:56,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:56,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1980 [2020-10-26 19:21:56,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 19:21:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-26 19:21:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:56,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:56,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:56,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:56,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:56,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:56,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:21:56,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:56,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:56,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:21:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:56,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:56,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:56,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:56,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:56,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:21:56,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:56,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:21:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:21:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:56,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:21:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:56,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:56,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:56,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:56,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:21:56,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:21:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:21:56,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-26 19:21:56,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871593919] [2020-10-26 19:21:56,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:21:56,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:21:56,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488066926] [2020-10-26 19:21:56,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:21:56,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:56,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:21:56,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:21:56,494 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 14 states. [2020-10-26 19:21:56,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:56,965 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-26 19:21:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 19:21:56,965 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-26 19:21:56,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:56,966 INFO L225 Difference]: With dead ends: 87 [2020-10-26 19:21:56,967 INFO L226 Difference]: Without dead ends: 83 [2020-10-26 19:21:56,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:21:56,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-26 19:21:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2020-10-26 19:21:56,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-26 19:21:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2020-10-26 19:21:56,975 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 60 [2020-10-26 19:21:56,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:56,975 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2020-10-26 19:21:56,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:21:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2020-10-26 19:21:56,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-26 19:21:56,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:56,976 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:56,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 19:21:56,977 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:56,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:56,977 INFO L82 PathProgramCache]: Analyzing trace with hash 2025084916, now seen corresponding path program 11 times [2020-10-26 19:21:56,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:56,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219187493] [2020-10-26 19:21:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:57,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:59,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:59,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 19:21:59,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:21:59,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2226 [2020-10-26 19:21:59,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 19:21:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:21:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 19:21:59,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:59,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:21:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:59,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:59,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:59,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:21:59,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:59,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:21:59,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:21:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:59,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:21:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:59,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:59,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:59,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:59,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:21:59,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:21:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:59,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:21:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:59,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:59,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:59,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:59,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:21:59,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:21:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:59,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:59,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:21:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:59,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:59,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:21:59,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:21:59,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:21:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:21:59,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:21:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:21:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:21:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:21:59,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:21:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 19:21:59,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219187493] [2020-10-26 19:21:59,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:21:59,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 19:21:59,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829526294] [2020-10-26 19:21:59,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 19:21:59,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:21:59,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 19:21:59,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-26 19:21:59,346 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 11 states. [2020-10-26 19:21:59,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:21:59,457 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2020-10-26 19:21:59,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 19:21:59,457 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-26 19:21:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:21:59,458 INFO L225 Difference]: With dead ends: 126 [2020-10-26 19:21:59,458 INFO L226 Difference]: Without dead ends: 75 [2020-10-26 19:21:59,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-26 19:21:59,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-26 19:21:59,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2020-10-26 19:21:59,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-26 19:21:59,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-10-26 19:21:59,466 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 68 [2020-10-26 19:21:59,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:21:59,467 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-10-26 19:21:59,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 19:21:59,467 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-10-26 19:21:59,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-26 19:21:59,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:21:59,468 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:21:59,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 19:21:59,469 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:21:59,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:21:59,469 INFO L82 PathProgramCache]: Analyzing trace with hash -454162474, now seen corresponding path program 12 times [2020-10-26 19:21:59,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:21:59,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990608519] [2020-10-26 19:21:59,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:21:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:21:59,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:21:59,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:01,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:01,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 19:22:01,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:01,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2413 [2020-10-26 19:22:01,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:01,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 19:22:01,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:01,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 19:22:01,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:02,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:02,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:02,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:02,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:02,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 19:22:02,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:02,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:22:02,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-26 19:22:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:02,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:02,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:02,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:02,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:02,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:22:02,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:02,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:02,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 19:22:02,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:22:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:02,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:02,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:02,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:02,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:22:02,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:02,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:02,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:02,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:02,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:22:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:02,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:02,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:02,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:02,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:02,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:02,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:02,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:02,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:02,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 19:22:02,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990608519] [2020-10-26 19:22:02,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:02,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:22:02,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513959276] [2020-10-26 19:22:02,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:22:02,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:02,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:22:02,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:22:02,103 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 12 states. [2020-10-26 19:22:02,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:02,253 INFO L93 Difference]: Finished difference Result 128 states and 144 transitions. [2020-10-26 19:22:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 19:22:02,254 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-26 19:22:02,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:02,256 INFO L225 Difference]: With dead ends: 128 [2020-10-26 19:22:02,256 INFO L226 Difference]: Without dead ends: 77 [2020-10-26 19:22:02,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:22:02,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-26 19:22:02,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-10-26 19:22:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-26 19:22:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-10-26 19:22:02,265 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 70 [2020-10-26 19:22:02,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:02,265 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-10-26 19:22:02,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:22:02,266 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-10-26 19:22:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-26 19:22:02,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:02,266 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:02,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 19:22:02,267 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:02,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:02,267 INFO L82 PathProgramCache]: Analyzing trace with hash 695945016, now seen corresponding path program 13 times [2020-10-26 19:22:02,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:02,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460567050] [2020-10-26 19:22:02,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:02,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:02,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:04,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:04,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 19:22:04,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:04,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2617 [2020-10-26 19:22:04,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:22:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 19:22:04,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:05,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:05,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:05,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:05,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:05,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:05,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:22:05,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:05,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:05,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:05,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:22:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:05,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:05,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:05,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:05,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:05,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:05,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:05,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:05,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:22:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:05,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:05,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:05,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:05,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:05,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:22:05,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:05,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:05,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:05,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:05,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:05,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 19:22:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:05,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:05,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:05,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:05,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:05,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:05,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 6 proven. 81 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 19:22:05,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460567050] [2020-10-26 19:22:05,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:05,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 19:22:05,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496448407] [2020-10-26 19:22:05,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 19:22:05,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:05,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 19:22:05,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:22:05,082 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 13 states. [2020-10-26 19:22:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:05,183 INFO L93 Difference]: Finished difference Result 130 states and 146 transitions. [2020-10-26 19:22:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 19:22:05,183 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-10-26 19:22:05,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:05,185 INFO L225 Difference]: With dead ends: 130 [2020-10-26 19:22:05,185 INFO L226 Difference]: Without dead ends: 79 [2020-10-26 19:22:05,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:22:05,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-26 19:22:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-10-26 19:22:05,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-26 19:22:05,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-10-26 19:22:05,204 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 72 [2020-10-26 19:22:05,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:05,204 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-10-26 19:22:05,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 19:22:05,204 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-10-26 19:22:05,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-26 19:22:05,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:05,206 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:05,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 19:22:05,206 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:05,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:05,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2142647834, now seen corresponding path program 14 times [2020-10-26 19:22:05,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:05,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219090151] [2020-10-26 19:22:05,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:05,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:08,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:08,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 19:22:08,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:08,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3133 [2020-10-26 19:22:08,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:08,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 19:22:08,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:08,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 19:22:08,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:08,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:08,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:08,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:08,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:08,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:22:08,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:08,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 19:22:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:08,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:08,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:08,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:08,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:08,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:08,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:08,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:22:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:08,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:08,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:08,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:08,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:08,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:08,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:08,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:08,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:08,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:08,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:22:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:08,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:08,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:08,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:08,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:08,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:08,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:08,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 6 proven. 100 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 19:22:08,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219090151] [2020-10-26 19:22:08,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:08,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:22:08,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062709937] [2020-10-26 19:22:08,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:22:08,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:08,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:22:08,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:22:08,530 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 14 states. [2020-10-26 19:22:08,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:08,649 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2020-10-26 19:22:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 19:22:08,649 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 74 [2020-10-26 19:22:08,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:08,650 INFO L225 Difference]: With dead ends: 132 [2020-10-26 19:22:08,650 INFO L226 Difference]: Without dead ends: 81 [2020-10-26 19:22:08,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:22:08,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-26 19:22:08,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-10-26 19:22:08,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-26 19:22:08,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-10-26 19:22:08,660 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 74 [2020-10-26 19:22:08,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:08,661 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-10-26 19:22:08,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:22:08,661 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-10-26 19:22:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-26 19:22:08,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:08,662 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:08,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 19:22:08,662 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:08,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:08,663 INFO L82 PathProgramCache]: Analyzing trace with hash 854652028, now seen corresponding path program 15 times [2020-10-26 19:22:08,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:08,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943307223] [2020-10-26 19:22:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:08,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:08,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:11,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:11,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 19:22:11,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:11,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2632 [2020-10-26 19:22:11,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:22:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 19:22:11,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:11,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:11,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:11,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:11,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:11,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:22:11,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:11,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 19:22:11,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:22:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:11,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:11,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:11,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:11,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:11,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:22:11,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:11,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:11,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:11,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:11,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:22:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:11,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:11,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:11,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:11,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:11,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:22:11,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:11,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:11,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:22:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:11,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:11,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:11,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:11,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:11,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:22:11,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:11,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-10-26 19:22:11,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943307223] [2020-10-26 19:22:11,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:11,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:22:11,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374732703] [2020-10-26 19:22:11,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:22:11,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:11,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:22:11,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:22:11,637 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 16 states. [2020-10-26 19:22:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:12,245 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2020-10-26 19:22:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:22:12,245 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-10-26 19:22:12,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:12,247 INFO L225 Difference]: With dead ends: 118 [2020-10-26 19:22:12,247 INFO L226 Difference]: Without dead ends: 93 [2020-10-26 19:22:12,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2020-10-26 19:22:12,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-26 19:22:12,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2020-10-26 19:22:12,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-26 19:22:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2020-10-26 19:22:12,256 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 76 [2020-10-26 19:22:12,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:12,256 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2020-10-26 19:22:12,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:22:12,256 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2020-10-26 19:22:12,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-26 19:22:12,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:12,257 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:12,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 19:22:12,257 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:12,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:12,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1460666570, now seen corresponding path program 16 times [2020-10-26 19:22:12,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:12,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747256710] [2020-10-26 19:22:12,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:12,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:12,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:16,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:16,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 19:22:16,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:16,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4246 [2020-10-26 19:22:16,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 19:22:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 19:22:16,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:16,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:16,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:16,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:16,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:16,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:16,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:16,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:16,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:16,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 19:22:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:16,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:16,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:16,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:16,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:16,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:16,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:16,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:16,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:22:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:16,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:16,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:16,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:16,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:16,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:22:16,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:16,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:16,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:16,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:16,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:16,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-26 19:22:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:16,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:16,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:16,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:16,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:16,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:16,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:16,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 6 proven. 121 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-26 19:22:16,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747256710] [2020-10-26 19:22:16,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:16,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:22:16,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475171775] [2020-10-26 19:22:16,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:22:16,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:16,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:22:16,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:22:16,707 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand 15 states. [2020-10-26 19:22:16,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:16,832 INFO L93 Difference]: Finished difference Result 140 states and 158 transitions. [2020-10-26 19:22:16,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 19:22:16,832 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 79 [2020-10-26 19:22:16,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:16,833 INFO L225 Difference]: With dead ends: 140 [2020-10-26 19:22:16,833 INFO L226 Difference]: Without dead ends: 86 [2020-10-26 19:22:16,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:22:16,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-26 19:22:16,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-26 19:22:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-26 19:22:16,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-10-26 19:22:16,841 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 79 [2020-10-26 19:22:16,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:16,841 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-10-26 19:22:16,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:22:16,842 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-10-26 19:22:16,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-26 19:22:16,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:16,842 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:16,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 19:22:16,843 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:16,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:16,843 INFO L82 PathProgramCache]: Analyzing trace with hash -906564076, now seen corresponding path program 17 times [2020-10-26 19:22:16,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:16,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415865417] [2020-10-26 19:22:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:16,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:17,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:19,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:19,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 19:22:19,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:19,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2583 [2020-10-26 19:22:19,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:22:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 19:22:19,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:19,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:19,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:19,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:19,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:19,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:19,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:19,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:19,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:19,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:22:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:19,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:19,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:19,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:19,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:19,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:19,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:19,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:19,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:19,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:22:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:19,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:19,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:19,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:19,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:19,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:19,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:19,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:19,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-26 19:22:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:19,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:19,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:19,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:19,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:19,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:19,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:19,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-26 19:22:19,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415865417] [2020-10-26 19:22:19,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:19,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:22:19,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711830799] [2020-10-26 19:22:19,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:22:19,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:19,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:22:19,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:22:19,725 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 16 states. [2020-10-26 19:22:20,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:20,519 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2020-10-26 19:22:20,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 19:22:20,520 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 81 [2020-10-26 19:22:20,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:20,522 INFO L225 Difference]: With dead ends: 112 [2020-10-26 19:22:20,522 INFO L226 Difference]: Without dead ends: 108 [2020-10-26 19:22:20,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2020-10-26 19:22:20,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-26 19:22:20,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 93. [2020-10-26 19:22:20,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-26 19:22:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-10-26 19:22:20,541 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 81 [2020-10-26 19:22:20,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:20,541 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-10-26 19:22:20,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:22:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-10-26 19:22:20,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-26 19:22:20,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:20,543 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:20,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 19:22:20,544 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:20,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:20,544 INFO L82 PathProgramCache]: Analyzing trace with hash 989680238, now seen corresponding path program 18 times [2020-10-26 19:22:20,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:20,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746943794] [2020-10-26 19:22:20,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:20,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:20,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:23,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:23,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 19:22:23,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3358 [2020-10-26 19:22:23,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:22:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 19:22:23,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:24,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:24,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:24,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:24,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:24,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:24,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:24,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:24,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:24,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:22:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:24,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:24,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:24,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:24,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:22:24,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:24,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:24,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:24,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:24,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:24,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:22:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:24,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:24,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:24,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:24,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:24,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:24,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:24,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:24,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:24,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:24,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:24,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-26 19:22:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:24,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:24,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:24,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:24,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:24,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:22:24,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:24,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:24,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:24,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:24,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:24,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:22:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:24,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:24,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:24,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:24,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:24,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 32 proven. 53 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-26 19:22:24,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746943794] [2020-10-26 19:22:24,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:24,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:22:24,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185642790] [2020-10-26 19:22:24,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:22:24,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:24,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:22:24,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:22:24,258 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 18 states. [2020-10-26 19:22:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:25,001 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-10-26 19:22:25,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 19:22:25,004 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 89 [2020-10-26 19:22:25,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:25,006 INFO L225 Difference]: With dead ends: 135 [2020-10-26 19:22:25,006 INFO L226 Difference]: Without dead ends: 106 [2020-10-26 19:22:25,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2020-10-26 19:22:25,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-26 19:22:25,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2020-10-26 19:22:25,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-26 19:22:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2020-10-26 19:22:25,016 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 89 [2020-10-26 19:22:25,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:25,016 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2020-10-26 19:22:25,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:22:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2020-10-26 19:22:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-26 19:22:25,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:25,017 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 7, 7, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:25,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 19:22:25,018 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:25,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:25,018 INFO L82 PathProgramCache]: Analyzing trace with hash -325404424, now seen corresponding path program 19 times [2020-10-26 19:22:25,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:25,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617678870] [2020-10-26 19:22:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:25,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:28,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:28,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 19:22:28,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:28,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3446 [2020-10-26 19:22:28,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:22:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 19:22:28,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:28,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:28,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:28,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:28,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:28,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:28,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:28,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:28,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:28,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:28,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:28,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:28,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:22:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:28,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:28,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:28,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:28,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:28,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:28,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:28,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:28,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:22:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:28,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:28,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:28,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:28,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:28,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:28,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:28,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:22:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:28,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:28,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:28,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:28,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:28,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:28,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:28,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:28,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:22:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:28,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:28,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:28,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:28,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:28,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-26 19:22:28,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617678870] [2020-10-26 19:22:28,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:28,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:22:28,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095947846] [2020-10-26 19:22:28,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:22:28,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:28,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:22:28,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:22:28,807 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand 18 states. [2020-10-26 19:22:29,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:29,894 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2020-10-26 19:22:29,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-26 19:22:29,896 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 92 [2020-10-26 19:22:29,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:29,898 INFO L225 Difference]: With dead ends: 127 [2020-10-26 19:22:29,898 INFO L226 Difference]: Without dead ends: 123 [2020-10-26 19:22:29,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2020-10-26 19:22:29,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-26 19:22:29,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 104. [2020-10-26 19:22:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-26 19:22:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2020-10-26 19:22:29,913 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 92 [2020-10-26 19:22:29,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:29,913 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2020-10-26 19:22:29,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:22:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2020-10-26 19:22:29,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-26 19:22:29,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:29,915 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:29,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 19:22:29,915 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:29,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:29,918 INFO L82 PathProgramCache]: Analyzing trace with hash 388626770, now seen corresponding path program 20 times [2020-10-26 19:22:29,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:29,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006382419] [2020-10-26 19:22:29,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:29,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:30,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:33,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:33,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 19:22:33,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3939 [2020-10-26 19:22:33,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:22:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-26 19:22:33,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:34,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:34,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:34,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:34,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:34,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:34,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:34,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:34,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:34,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:34,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:34,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:34,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:22:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:34,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:34,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:34,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:34,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:34,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:22:34,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:34,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:22:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:34,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:34,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:34,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:34,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:34,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:34,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:34,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:22:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:34,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:34,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:34,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:34,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:34,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:34,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:34,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:22:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:34,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:34,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:34,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:34,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:34,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:22:34,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:34,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:22:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:34,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:34,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:34,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:34,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:34,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:34,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:34,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:34,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:34,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:34,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 10 proven. 144 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-26 19:22:34,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006382419] [2020-10-26 19:22:34,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:34,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:22:34,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244862712] [2020-10-26 19:22:34,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:22:34,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:34,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:22:34,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:22:34,072 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand 16 states. [2020-10-26 19:22:34,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:34,203 INFO L93 Difference]: Finished difference Result 180 states and 200 transitions. [2020-10-26 19:22:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 19:22:34,204 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 100 [2020-10-26 19:22:34,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:34,205 INFO L225 Difference]: With dead ends: 180 [2020-10-26 19:22:34,205 INFO L226 Difference]: Without dead ends: 107 [2020-10-26 19:22:34,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:22:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-26 19:22:34,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2020-10-26 19:22:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-26 19:22:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2020-10-26 19:22:34,215 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 100 [2020-10-26 19:22:34,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:34,215 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2020-10-26 19:22:34,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:22:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2020-10-26 19:22:34,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-26 19:22:34,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:34,217 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:34,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 19:22:34,217 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:34,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:34,217 INFO L82 PathProgramCache]: Analyzing trace with hash -245653196, now seen corresponding path program 21 times [2020-10-26 19:22:34,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:34,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285965573] [2020-10-26 19:22:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:34,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:34,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:38,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:38,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 19:22:38,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:38,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4078 [2020-10-26 19:22:38,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:22:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 19:22:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:38,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:38,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:38,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:38,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:38,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:22:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:38,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:38,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:38,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:38,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:38,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:38,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-26 19:22:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:38,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:38,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:38,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:38,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:38,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:38,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:38,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:22:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:38,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:38,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:38,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:38,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:38,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:38,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:38,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-26 19:22:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:38,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:38,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:38,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:38,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:38,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:38,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:38,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:38,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:22:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:38,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:38,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:38,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:38,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:38,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:38,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:38,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:38,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 11 proven. 112 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2020-10-26 19:22:38,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285965573] [2020-10-26 19:22:38,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:38,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:22:38,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859048510] [2020-10-26 19:22:38,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:22:38,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:38,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:22:38,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:22:38,685 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand 20 states. [2020-10-26 19:22:39,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:39,949 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2020-10-26 19:22:39,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-26 19:22:39,949 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 102 [2020-10-26 19:22:39,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:39,951 INFO L225 Difference]: With dead ends: 146 [2020-10-26 19:22:39,951 INFO L226 Difference]: Without dead ends: 142 [2020-10-26 19:22:39,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=1421, Unknown=0, NotChecked=0, Total=1560 [2020-10-26 19:22:39,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-26 19:22:39,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 114. [2020-10-26 19:22:39,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-26 19:22:39,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-10-26 19:22:39,962 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 102 [2020-10-26 19:22:39,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:39,962 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-10-26 19:22:39,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:22:39,962 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-10-26 19:22:39,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-26 19:22:39,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:39,964 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:39,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 19:22:39,964 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:39,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:39,964 INFO L82 PathProgramCache]: Analyzing trace with hash 546104718, now seen corresponding path program 22 times [2020-10-26 19:22:39,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:39,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137711000] [2020-10-26 19:22:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:40,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:43,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:43,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 19:22:43,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:43,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3754 [2020-10-26 19:22:43,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:22:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 19:22:43,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:43,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:43,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:43,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:43,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:43,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:43,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:43,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:43,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:43,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:43,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:43,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:43,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:22:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:43,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:43,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:43,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:43,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:43,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:43,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:43,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:43,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:43,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:43,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:43,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-26 19:22:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:43,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:43,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:43,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:43,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:43,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:43,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:43,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:43,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:22:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:43,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:43,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:43,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:43,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:43,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:43,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:43,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-26 19:22:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:43,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:43,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:43,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:43,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:43,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:43,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:43,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:43,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:43,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:43,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:22:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:43,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:43,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:43,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:43,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:43,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:43,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:22:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:43,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:43,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:43,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:43,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:43,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:22:43,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:43,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:43,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:43,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:43,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 12 proven. 169 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-26 19:22:43,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137711000] [2020-10-26 19:22:43,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:43,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:22:43,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395772355] [2020-10-26 19:22:43,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:22:43,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:43,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:22:43,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:22:43,957 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 17 states. [2020-10-26 19:22:44,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:44,098 INFO L93 Difference]: Finished difference Result 198 states and 218 transitions. [2020-10-26 19:22:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 19:22:44,098 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-26 19:22:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:44,100 INFO L225 Difference]: With dead ends: 198 [2020-10-26 19:22:44,100 INFO L226 Difference]: Without dead ends: 117 [2020-10-26 19:22:44,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:22:44,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-26 19:22:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-10-26 19:22:44,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-26 19:22:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2020-10-26 19:22:44,111 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 110 [2020-10-26 19:22:44,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:44,111 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2020-10-26 19:22:44,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:22:44,111 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2020-10-26 19:22:44,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-26 19:22:44,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:44,113 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:44,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 19:22:44,113 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:44,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:44,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1409260272, now seen corresponding path program 23 times [2020-10-26 19:22:44,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:44,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531014161] [2020-10-26 19:22:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:44,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:44,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:48,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:48,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 19:22:48,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4271 [2020-10-26 19:22:48,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:22:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 19:22:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:48,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:48,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:48,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:48,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:48,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:48,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:48,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:48,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:48,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:48,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 19:22:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:48,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:48,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:48,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:48,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:48,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:22:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:48,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:48,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:48,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:48,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:48,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:22:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:48,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:48,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:48,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:48,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:48,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:48,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:48,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:22:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:48,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:48,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:48,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:48,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:48,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:48,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:48,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:48,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:48,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:48,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:22:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:48,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:48,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:48,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:48,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:48,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:22:48,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:48,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:48,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-26 19:22:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:48,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:48,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:48,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:48,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:48,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:22:48,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:48,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:48,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:48,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:48,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 12 proven. 196 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-26 19:22:48,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531014161] [2020-10-26 19:22:48,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:48,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:22:48,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867868117] [2020-10-26 19:22:48,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:22:48,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:48,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:22:48,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:22:48,634 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand 18 states. [2020-10-26 19:22:48,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:48,770 INFO L93 Difference]: Finished difference Result 200 states and 220 transitions. [2020-10-26 19:22:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 19:22:48,771 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 112 [2020-10-26 19:22:48,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:48,772 INFO L225 Difference]: With dead ends: 200 [2020-10-26 19:22:48,772 INFO L226 Difference]: Without dead ends: 119 [2020-10-26 19:22:48,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:22:48,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-26 19:22:48,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2020-10-26 19:22:48,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-26 19:22:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2020-10-26 19:22:48,783 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 112 [2020-10-26 19:22:48,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:48,783 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2020-10-26 19:22:48,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:22:48,783 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2020-10-26 19:22:48,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-26 19:22:48,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:48,785 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:48,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-26 19:22:48,785 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:48,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:48,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1973059538, now seen corresponding path program 24 times [2020-10-26 19:22:48,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:48,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637475678] [2020-10-26 19:22:48,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:48,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:49,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:53,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:53,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 19:22:53,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:53,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4651 [2020-10-26 19:22:53,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:53,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:22:53,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:53,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 19:22:53,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:53,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:53,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:53,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:53,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:53,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:53,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:53,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:53,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:22:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:53,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:53,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:53,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:53,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:53,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:53,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:53,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:53,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:22:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:53,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:53,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:53,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:53,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:53,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:53,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:53,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:53,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:53,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:53,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-26 19:22:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:53,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:53,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:53,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:53,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:53,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:53,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:53,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:53,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:53,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:53,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:53,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:22:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:53,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:53,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:53,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:53,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:53,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:53,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:53,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:53,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:53,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 19:22:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:53,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:53,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:53,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:53,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:53,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 19:22:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:53,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:53,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:53,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:53,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:53,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:53,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:22:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:22:53,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 84 proven. 63 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2020-10-26 19:22:53,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637475678] [2020-10-26 19:22:53,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:53,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:22:53,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261859224] [2020-10-26 19:22:53,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:22:53,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:53,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:22:53,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:22:53,677 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand 17 states. [2020-10-26 19:22:54,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:54,041 INFO L93 Difference]: Finished difference Result 169 states and 190 transitions. [2020-10-26 19:22:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 19:22:54,041 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 114 [2020-10-26 19:22:54,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:54,042 INFO L225 Difference]: With dead ends: 169 [2020-10-26 19:22:54,042 INFO L226 Difference]: Without dead ends: 131 [2020-10-26 19:22:54,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:22:54,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-26 19:22:54,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 121. [2020-10-26 19:22:54,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-26 19:22:54,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-10-26 19:22:54,053 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 114 [2020-10-26 19:22:54,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:54,054 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-10-26 19:22:54,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:22:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-10-26 19:22:54,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-26 19:22:54,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:54,055 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:54,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-26 19:22:54,056 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:54,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:54,056 INFO L82 PathProgramCache]: Analyzing trace with hash -213274884, now seen corresponding path program 25 times [2020-10-26 19:22:54,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:54,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182782952] [2020-10-26 19:22:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:54,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:54,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:59,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:59,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 19:22:59,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:22:59,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 19:22:59,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:22:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:22:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 19:22:59,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:59,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:22:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:59,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:59,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:59,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:22:59,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:59,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:22:59,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:22:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:59,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:59,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:22:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:59,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:59,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:59,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:59,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:59,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:59,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:59,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:59,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-26 19:22:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:59,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:59,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:59,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:59,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:59,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:59,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:59,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:59,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:59,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:59,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-26 19:22:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:59,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:59,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:59,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:59,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:59,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:59,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:59,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:59,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 19:22:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:59,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:59,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:59,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:59,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:59,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:59,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:59,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:59,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-26 19:22:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:59,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:59,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:59,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:59,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:59,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 19:22:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:59,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:22:59,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:22:59,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:22:59,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:22:59,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:22:59,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:22:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:22:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:22:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:22:59,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:22:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 12 proven. 225 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-26 19:22:59,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182782952] [2020-10-26 19:22:59,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:22:59,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:22:59,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425733219] [2020-10-26 19:22:59,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:22:59,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:22:59,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:22:59,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:22:59,332 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 19 states. [2020-10-26 19:22:59,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:22:59,465 INFO L93 Difference]: Finished difference Result 208 states and 230 transitions. [2020-10-26 19:22:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 19:22:59,466 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 117 [2020-10-26 19:22:59,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:22:59,467 INFO L225 Difference]: With dead ends: 208 [2020-10-26 19:22:59,468 INFO L226 Difference]: Without dead ends: 124 [2020-10-26 19:22:59,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:22:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-26 19:22:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-26 19:22:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-26 19:22:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2020-10-26 19:22:59,485 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 117 [2020-10-26 19:22:59,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:22:59,485 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2020-10-26 19:22:59,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:22:59,486 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2020-10-26 19:22:59,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-26 19:22:59,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:22:59,488 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:22:59,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-26 19:22:59,488 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:22:59,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:22:59,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1417971546, now seen corresponding path program 26 times [2020-10-26 19:22:59,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:22:59,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660566479] [2020-10-26 19:22:59,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:22:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:22:59,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:04,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:04,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 19:23:04,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:23:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 19:23:04,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:23:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:23:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 19:23:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:04,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:23:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:04,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:04,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:04,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:23:04,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:04,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:04,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:04,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:04,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-26 19:23:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:04,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:04,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:04,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:04,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:04,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:04,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-26 19:23:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:04,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:04,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:04,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:04,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:04,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:23:04,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:04,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:04,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:04,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:04,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:04,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:23:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:04,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:04,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:04,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:04,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:04,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:23:04,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:04,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:04,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:04,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:04,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:04,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-26 19:23:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:04,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:04,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:04,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:04,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:04,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:23:04,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:04,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:04,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:04,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-26 19:23:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:04,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:04,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:04,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:04,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:04,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:04,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:04,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:04,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:04,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:04,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:04,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-26 19:23:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:04,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:04,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:04,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:04,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:04,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:04,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 72 proven. 96 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2020-10-26 19:23:04,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660566479] [2020-10-26 19:23:04,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:23:04,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:23:04,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754637983] [2020-10-26 19:23:04,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:23:04,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:23:04,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:23:04,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:23:04,927 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand 22 states. [2020-10-26 19:23:05,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:23:05,891 INFO L93 Difference]: Finished difference Result 173 states and 195 transitions. [2020-10-26 19:23:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-26 19:23:05,891 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 119 [2020-10-26 19:23:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:23:05,893 INFO L225 Difference]: With dead ends: 173 [2020-10-26 19:23:05,893 INFO L226 Difference]: Without dead ends: 136 [2020-10-26 19:23:05,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2020-10-26 19:23:05,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-26 19:23:05,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 126. [2020-10-26 19:23:05,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-26 19:23:05,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2020-10-26 19:23:05,907 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 119 [2020-10-26 19:23:05,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:23:05,907 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2020-10-26 19:23:05,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:23:05,907 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2020-10-26 19:23:05,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-26 19:23:05,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:23:05,910 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:23:05,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-26 19:23:05,910 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:23:05,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:23:05,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1215554956, now seen corresponding path program 27 times [2020-10-26 19:23:05,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:23:05,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377675934] [2020-10-26 19:23:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:23:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:05,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:06,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:10,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:10,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-26 19:23:10,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:23:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 19:23:10,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:23:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:23:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 19:23:10,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:11,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:23:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:11,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:11,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:11,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:23:11,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:11,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:11,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:11,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:11,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:23:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:11,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:11,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:11,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:11,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:11,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:11,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:11,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:11,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:11,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:11,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:11,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-26 19:23:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:11,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:11,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:11,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:11,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:11,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:11,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:11,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:11,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:11,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:11,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:23:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:11,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:11,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:11,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:11,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:11,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:11,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:11,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:11,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:11,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:11,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 19:23:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:11,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:11,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:11,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:11,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:11,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:11,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:11,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:11,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 19:23:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:11,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:11,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:11,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:11,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:11,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:11,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:11,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:11,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:11,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:11,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:11,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:23:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:11,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:11,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:11,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:11,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:11,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:11,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:11,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:11,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:11,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:11,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:11,215 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 12 proven. 256 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-26 19:23:11,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377675934] [2020-10-26 19:23:11,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:23:11,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:23:11,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744150022] [2020-10-26 19:23:11,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:23:11,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:23:11,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:23:11,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:23:11,217 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand 20 states. [2020-10-26 19:23:11,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:23:11,397 INFO L93 Difference]: Finished difference Result 216 states and 240 transitions. [2020-10-26 19:23:11,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:23:11,398 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 122 [2020-10-26 19:23:11,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:23:11,399 INFO L225 Difference]: With dead ends: 216 [2020-10-26 19:23:11,399 INFO L226 Difference]: Without dead ends: 129 [2020-10-26 19:23:11,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:23:11,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-26 19:23:11,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2020-10-26 19:23:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-26 19:23:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 140 transitions. [2020-10-26 19:23:11,408 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 140 transitions. Word has length 122 [2020-10-26 19:23:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:23:11,408 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 140 transitions. [2020-10-26 19:23:11,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:23:11,409 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 140 transitions. [2020-10-26 19:23:11,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-26 19:23:11,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:23:11,410 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:23:11,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-26 19:23:11,411 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:23:11,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:23:11,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1103088854, now seen corresponding path program 28 times [2020-10-26 19:23:11,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:23:11,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384050431] [2020-10-26 19:23:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:23:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:11,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:11,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:16,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:16,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 19:23:16,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:23:16,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 19:23:16,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:16,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-26 19:23:16,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:23:16,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 19:23:16,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:23:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:16,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:16,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:16,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:23:16,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:16,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:16,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:23:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:16,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:16,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:16,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:16,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:16,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:23:16,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:16,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:16,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:23:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:16,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:16,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:16,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:16,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:16,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:23:16,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:16,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:23:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:16,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:16,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:16,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:16,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:16,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:23:16,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:16,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 19:23:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:16,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:16,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:16,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:16,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:16,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:23:16,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:16,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:23:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:16,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:16,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:16,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:16,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:23:16,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:16,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:16,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 19:23:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:16,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:16,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:16,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:16,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:16,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:16,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:16,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:16,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:16,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:16,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 12 proven. 289 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-26 19:23:16,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384050431] [2020-10-26 19:23:16,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:23:16,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-26 19:23:16,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870052286] [2020-10-26 19:23:16,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 19:23:16,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:23:16,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 19:23:16,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:23:16,718 INFO L87 Difference]: Start difference. First operand 128 states and 140 transitions. Second operand 21 states. [2020-10-26 19:23:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:23:16,892 INFO L93 Difference]: Finished difference Result 218 states and 242 transitions. [2020-10-26 19:23:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-26 19:23:16,892 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 124 [2020-10-26 19:23:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:23:16,894 INFO L225 Difference]: With dead ends: 218 [2020-10-26 19:23:16,894 INFO L226 Difference]: Without dead ends: 131 [2020-10-26 19:23:16,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:23:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-26 19:23:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2020-10-26 19:23:16,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-26 19:23:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2020-10-26 19:23:16,904 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 124 [2020-10-26 19:23:16,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:23:16,904 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2020-10-26 19:23:16,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-26 19:23:16,904 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2020-10-26 19:23:16,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-26 19:23:16,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:23:16,905 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:23:16,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-26 19:23:16,906 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:23:16,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:23:16,906 INFO L82 PathProgramCache]: Analyzing trace with hash 231763640, now seen corresponding path program 29 times [2020-10-26 19:23:16,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:23:16,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768194005] [2020-10-26 19:23:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:23:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:16,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:16,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:21,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:21,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 19:23:21,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:23:21,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 19:23:21,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:21,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:23:21,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:23:21,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 19:23:21,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:22,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:23:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:22,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:22,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:22,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:23:22,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:22,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:22,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:22,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:22,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:22,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:23:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:22,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:22,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:22,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:22,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:22,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:22,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:22,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:22,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-26 19:23:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:22,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:22,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:22,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:22,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:22,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:22,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:23:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:22,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:22,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:22,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:22,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:22,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:22,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:22,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:23:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:22,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:22,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:22,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:22,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:22,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:22,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:22,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:23:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:22,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:22,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:22,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:22,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:22,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:22,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:22,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:22,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:22,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-26 19:23:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:22,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:22,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:22,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:22,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:22,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:22,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 14 proven. 175 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2020-10-26 19:23:22,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768194005] [2020-10-26 19:23:22,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:23:22,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:23:22,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165735588] [2020-10-26 19:23:22,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:23:22,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:23:22,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:23:22,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:23:22,418 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand 22 states. [2020-10-26 19:23:24,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:23:24,015 INFO L93 Difference]: Finished difference Result 169 states and 187 transitions. [2020-10-26 19:23:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-26 19:23:24,016 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 126 [2020-10-26 19:23:24,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:23:24,018 INFO L225 Difference]: With dead ends: 169 [2020-10-26 19:23:24,018 INFO L226 Difference]: Without dead ends: 165 [2020-10-26 19:23:24,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2020-10-26 19:23:24,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-26 19:23:24,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 138. [2020-10-26 19:23:24,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-26 19:23:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2020-10-26 19:23:24,030 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 126 [2020-10-26 19:23:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:23:24,031 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2020-10-26 19:23:24,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:23:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2020-10-26 19:23:24,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-26 19:23:24,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:23:24,032 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:23:24,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-26 19:23:24,032 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:23:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:23:24,033 INFO L82 PathProgramCache]: Analyzing trace with hash -919736558, now seen corresponding path program 30 times [2020-10-26 19:23:24,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:23:24,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064332050] [2020-10-26 19:23:24,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:23:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:24,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:29,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:29,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 19:23:29,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:23:29,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 19:23:29,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 19:23:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:23:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 19:23:29,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:29,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:23:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:29,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:29,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:29,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:23:29,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:29,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:29,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:23:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:29,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:29,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:29,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:29,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:29,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:29,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:29,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-26 19:23:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:29,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:29,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:29,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:29,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:29,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:23:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:29,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:29,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:29,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:29,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:29,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:23:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:29,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:29,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:29,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:29,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:29,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:29,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:29,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:23:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:29,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:29,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:29,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:29,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:29,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:29,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:29,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:29,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-26 19:23:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:29,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:29,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:29,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:29,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:29,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:29,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:29,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:29,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:29,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:29,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:29,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:23:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:29,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:29,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:29,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:29,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:29,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:29,584 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 15 proven. 205 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2020-10-26 19:23:29,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064332050] [2020-10-26 19:23:29,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:23:29,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-26 19:23:29,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894142175] [2020-10-26 19:23:29,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-26 19:23:29,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:23:29,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-26 19:23:29,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:23:29,586 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand 24 states. [2020-10-26 19:23:31,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:23:31,630 INFO L93 Difference]: Finished difference Result 186 states and 206 transitions. [2020-10-26 19:23:31,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-26 19:23:31,631 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 134 [2020-10-26 19:23:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:23:31,633 INFO L225 Difference]: With dead ends: 186 [2020-10-26 19:23:31,634 INFO L226 Difference]: Without dead ends: 182 [2020-10-26 19:23:31,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=182, Invalid=2368, Unknown=0, NotChecked=0, Total=2550 [2020-10-26 19:23:31,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-26 19:23:31,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2020-10-26 19:23:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-26 19:23:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 158 transitions. [2020-10-26 19:23:31,644 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 158 transitions. Word has length 134 [2020-10-26 19:23:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:23:31,645 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 158 transitions. [2020-10-26 19:23:31,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-26 19:23:31,645 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 158 transitions. [2020-10-26 19:23:31,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-26 19:23:31,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:23:31,646 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:23:31,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-26 19:23:31,646 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:23:31,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:23:31,647 INFO L82 PathProgramCache]: Analyzing trace with hash 790263148, now seen corresponding path program 31 times [2020-10-26 19:23:31,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:23:31,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068231460] [2020-10-26 19:23:31,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:23:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:31,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:32,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:36,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:36,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-26 19:23:36,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:23:36,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 19:23:36,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-26 19:23:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:23:36,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-26 19:23:36,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:36,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:23:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:36,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:36,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:36,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:23:36,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:36,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:36,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:36,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:36,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:36,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:36,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:36,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:23:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:36,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:36,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:36,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:36,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:36,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:36,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:36,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:36,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-26 19:23:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:36,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:36,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:36,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:36,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:36,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:36,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:36,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:36,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:36,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:36,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:23:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:36,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:36,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:36,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:36,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:36,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:36,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:36,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:36,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:23:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:36,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:36,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:36,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:36,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:23:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:36,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:36,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:36,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:36,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:36,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:36,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-26 19:23:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:36,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:36,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:36,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:36,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:36,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:36,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:36,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:36,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:23:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:36,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:36,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:36,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:36,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:36,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:36,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:36,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-26 19:23:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:36,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:36,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:36,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:36,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:36,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:36,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:36,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 144 proven. 108 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2020-10-26 19:23:36,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068231460] [2020-10-26 19:23:36,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:23:36,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-26 19:23:36,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281384491] [2020-10-26 19:23:36,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 19:23:36,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:23:36,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 19:23:36,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:23:36,982 INFO L87 Difference]: Start difference. First operand 146 states and 158 transitions. Second operand 21 states. [2020-10-26 19:23:37,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:23:37,472 INFO L93 Difference]: Finished difference Result 205 states and 230 transitions. [2020-10-26 19:23:37,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-26 19:23:37,473 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 142 [2020-10-26 19:23:37,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:23:37,475 INFO L225 Difference]: With dead ends: 205 [2020-10-26 19:23:37,476 INFO L226 Difference]: Without dead ends: 159 [2020-10-26 19:23:37,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-10-26 19:23:37,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-26 19:23:37,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2020-10-26 19:23:37,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-26 19:23:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2020-10-26 19:23:37,488 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 142 [2020-10-26 19:23:37,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:23:37,489 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2020-10-26 19:23:37,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-26 19:23:37,489 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2020-10-26 19:23:37,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-26 19:23:37,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:23:37,490 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:23:37,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-26 19:23:37,490 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:23:37,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:23:37,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1099995402, now seen corresponding path program 32 times [2020-10-26 19:23:37,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:23:37,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583599468] [2020-10-26 19:23:37,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:23:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:37,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:42,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:42,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-26 19:23:42,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:23:42,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 19:23:42,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:42,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:23:42,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:23:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 19:23:42,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:42,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:23:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:42,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:42,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:42,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:23:42,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:42,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:23:42,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:42,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:42,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:23:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:42,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:42,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:42,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:42,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:42,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:42,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:42,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:23:42,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 19:23:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:42,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:42,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:42,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:42,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:42,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:42,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:42,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:42,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-26 19:23:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:42,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:42,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:42,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:42,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:42,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:23:42,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:42,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:23:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:42,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:42,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:42,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:42,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:42,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:42,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:42,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-26 19:23:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:42,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:42,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:42,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:42,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:42,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:42,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-26 19:23:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:42,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:42,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:42,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:42,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:42,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:42,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:42,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:42,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:42,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-26 19:23:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:42,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:42,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:42,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:42,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:42,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:42,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:42,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-26 19:23:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:42,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:42,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:42,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:42,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:42,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:42,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:42,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:42,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:42,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 16 proven. 324 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-26 19:23:42,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583599468] [2020-10-26 19:23:42,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:23:42,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:23:42,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132046867] [2020-10-26 19:23:42,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:23:42,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:23:42,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:23:42,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:23:42,908 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 22 states. [2020-10-26 19:23:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:23:43,126 INFO L93 Difference]: Finished difference Result 258 states and 284 transitions. [2020-10-26 19:23:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 19:23:43,127 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 145 [2020-10-26 19:23:43,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:23:43,129 INFO L225 Difference]: With dead ends: 258 [2020-10-26 19:23:43,129 INFO L226 Difference]: Without dead ends: 152 [2020-10-26 19:23:43,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:23:43,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-26 19:23:43,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2020-10-26 19:23:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-26 19:23:43,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 164 transitions. [2020-10-26 19:23:43,152 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 164 transitions. Word has length 145 [2020-10-26 19:23:43,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:23:43,153 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 164 transitions. [2020-10-26 19:23:43,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:23:43,153 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2020-10-26 19:23:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-26 19:23:43,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:23:43,156 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:23:43,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-26 19:23:43,156 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:23:43,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:23:43,157 INFO L82 PathProgramCache]: Analyzing trace with hash 2079152232, now seen corresponding path program 33 times [2020-10-26 19:23:43,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:23:43,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452660475] [2020-10-26 19:23:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:23:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:43,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:48,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:48,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-26 19:23:48,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:23:48,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 19:23:48,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 19:23:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:23:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 19:23:48,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:48,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:23:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:48,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:48,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:23:48,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:48,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:23:48,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:48,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:48,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:23:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:48,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:48,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:48,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:48,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:48,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:23:48,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:48,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:48,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:48,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:48,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:48,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-26 19:23:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:48,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:48,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:48,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:48,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:23:48,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:48,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:48,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:48,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:23:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:48,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:48,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:48,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:48,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:48,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:23:48,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:48,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 19:23:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:48,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:48,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:48,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:23:48,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:48,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:48,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-26 19:23:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:48,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:48,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:48,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:48,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:48,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:23:48,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:48,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:48,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:23:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:48,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:48,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:48,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:48,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:23:48,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:48,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:48,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:48,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:48,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-26 19:23:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:48,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:48,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:48,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:48,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:23:48,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:48,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:48,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-26 19:23:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:48,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:48,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:48,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:48,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:23:48,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:23:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:23:48,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 100 proven. 179 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2020-10-26 19:23:48,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452660475] [2020-10-26 19:23:48,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:23:48,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-26 19:23:48,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821354735] [2020-10-26 19:23:48,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-26 19:23:48,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:23:48,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-26 19:23:48,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:23:48,839 INFO L87 Difference]: Start difference. First operand 151 states and 164 transitions. Second operand 26 states. [2020-10-26 19:23:50,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:23:50,101 INFO L93 Difference]: Finished difference Result 209 states and 235 transitions. [2020-10-26 19:23:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-26 19:23:50,102 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 147 [2020-10-26 19:23:50,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:23:50,104 INFO L225 Difference]: With dead ends: 209 [2020-10-26 19:23:50,104 INFO L226 Difference]: Without dead ends: 164 [2020-10-26 19:23:50,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=345, Invalid=1725, Unknown=0, NotChecked=0, Total=2070 [2020-10-26 19:23:50,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-26 19:23:50,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 154. [2020-10-26 19:23:50,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-26 19:23:50,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 168 transitions. [2020-10-26 19:23:50,116 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 168 transitions. Word has length 147 [2020-10-26 19:23:50,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:23:50,117 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 168 transitions. [2020-10-26 19:23:50,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-26 19:23:50,117 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 168 transitions. [2020-10-26 19:23:50,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-26 19:23:50,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:23:50,118 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:23:50,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-26 19:23:50,118 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:23:50,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:23:50,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1387070606, now seen corresponding path program 34 times [2020-10-26 19:23:50,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:23:50,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677631256] [2020-10-26 19:23:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:23:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:50,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:50,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:55,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:55,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-26 19:23:55,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:23:55,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 19:23:55,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:55,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:23:55,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:23:55,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-26 19:23:55,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:55,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:23:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:55,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:55,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:55,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:23:55,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:55,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:55,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:55,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:23:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:55,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:55,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-26 19:23:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:55,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:55,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:55,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:55,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:55,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:55,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:55,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:23:55,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:23:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:55,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:55,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:55,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:55,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:55,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:55,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:55,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:23:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:55,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:55,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:55,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:55,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:55,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:55,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:55,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:23:55,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:23:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:55,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:55,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:55,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:55,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:55,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:23:55,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:55,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:55,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:55,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:55,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:55,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-26 19:23:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:55,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:55,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:55,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:55,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:55,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:55,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:55,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:55,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:23:55,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:23:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:55,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:55,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:55,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:55,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:55,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:55,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:55,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:55,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:23:55,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-26 19:23:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:55,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:55,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:55,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:55,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:55,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:55,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:55,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:23:55,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-26 19:23:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:55,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:55,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:23:55,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:23:55,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:23:55,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:23:55,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:23:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:23:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:23:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:23:55,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:23:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 16 proven. 361 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2020-10-26 19:23:55,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677631256] [2020-10-26 19:23:55,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:23:55,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-26 19:23:55,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426485985] [2020-10-26 19:23:55,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-26 19:23:55,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:23:55,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-26 19:23:55,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:23:55,574 INFO L87 Difference]: Start difference. First operand 154 states and 168 transitions. Second operand 23 states. [2020-10-26 19:23:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:23:55,784 INFO L93 Difference]: Finished difference Result 266 states and 294 transitions. [2020-10-26 19:23:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 19:23:55,784 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 150 [2020-10-26 19:23:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:23:55,786 INFO L225 Difference]: With dead ends: 266 [2020-10-26 19:23:55,786 INFO L226 Difference]: Without dead ends: 157 [2020-10-26 19:23:55,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:23:55,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-26 19:23:55,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-10-26 19:23:55,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-26 19:23:55,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 170 transitions. [2020-10-26 19:23:55,799 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 170 transitions. Word has length 150 [2020-10-26 19:23:55,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:23:55,799 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 170 transitions. [2020-10-26 19:23:55,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-26 19:23:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 170 transitions. [2020-10-26 19:23:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-26 19:23:55,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:23:55,801 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:23:55,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-26 19:23:55,801 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:23:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:23:55,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1076416528, now seen corresponding path program 35 times [2020-10-26 19:23:55,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:23:55,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403909447] [2020-10-26 19:23:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:23:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:23:55,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:23:56,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:00,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:00,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 19:24:00,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:24:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 19:24:00,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 19:24:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:24:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-26 19:24:00,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:01,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:24:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:01,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:01,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:01,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:24:01,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:01,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:01,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:01,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:01,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:24:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:01,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:01,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:01,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:01,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:01,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:01,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:01,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:01,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:01,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:01,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:01,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:24:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:01,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:01,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:01,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:01,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:01,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-26 19:24:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:01,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:01,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:01,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:01,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:01,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:01,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:01,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 19:24:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:01,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:01,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:01,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:01,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:01,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:01,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:01,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:24:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:01,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:01,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:01,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:01,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:01,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:01,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:01,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 19:24:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:01,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:01,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:01,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:01,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:01,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:01,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:01,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:01,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-26 19:24:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:01,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:01,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:01,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:01,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:01,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:01,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:01,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:01,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-26 19:24:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:01,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:01,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:01,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:01,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:01,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:01,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 18 proven. 288 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2020-10-26 19:24:01,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403909447] [2020-10-26 19:24:01,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:24:01,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-26 19:24:01,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129745795] [2020-10-26 19:24:01,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-26 19:24:01,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:24:01,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-26 19:24:01,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:24:01,501 INFO L87 Difference]: Start difference. First operand 156 states and 170 transitions. Second operand 26 states. [2020-10-26 19:24:03,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:24:03,996 INFO L93 Difference]: Finished difference Result 203 states and 225 transitions. [2020-10-26 19:24:04,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-26 19:24:04,001 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 152 [2020-10-26 19:24:04,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:24:04,003 INFO L225 Difference]: With dead ends: 203 [2020-10-26 19:24:04,003 INFO L226 Difference]: Without dead ends: 199 [2020-10-26 19:24:04,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=201, Invalid=2879, Unknown=0, NotChecked=0, Total=3080 [2020-10-26 19:24:04,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-26 19:24:04,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 164. [2020-10-26 19:24:04,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-26 19:24:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 178 transitions. [2020-10-26 19:24:04,016 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 178 transitions. Word has length 152 [2020-10-26 19:24:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:24:04,017 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 178 transitions. [2020-10-26 19:24:04,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-26 19:24:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 178 transitions. [2020-10-26 19:24:04,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-26 19:24:04,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:24:04,018 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:24:04,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-26 19:24:04,018 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:24:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:24:04,019 INFO L82 PathProgramCache]: Analyzing trace with hash 467400778, now seen corresponding path program 36 times [2020-10-26 19:24:04,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:24:04,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197927461] [2020-10-26 19:24:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:24:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:04,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:09,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:09,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-26 19:24:09,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:24:09,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 19:24:09,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:09,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 19:24:09,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:24:09,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 19:24:09,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:09,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:24:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:09,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:09,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:09,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:24:09,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:09,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:09,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:09,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:09,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:24:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:09,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:09,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:09,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:09,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:24:09,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:09,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:24:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:09,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:09,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:09,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:09,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:24:09,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:09,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:09,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:09,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:09,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:09,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-26 19:24:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:09,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:09,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:09,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:09,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:09,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:24:09,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:09,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:09,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 19:24:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:09,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:09,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:09,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:09,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:24:09,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:09,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:09,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:24:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:09,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:09,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:09,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:09,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:09,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:24:09,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:09,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:09,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 19:24:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:09,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:09,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:09,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:09,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:09,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:24:09,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:09,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:09,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:09,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:09,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:09,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-26 19:24:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:09,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:09,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:09,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:09,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:09,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:09,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:09,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:09,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:09,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:09,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:09,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-26 19:24:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:09,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:09,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:09,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:09,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:09,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:09,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:09,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-26 19:24:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:09,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:09,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:09,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:09,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:24:09,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:09,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 162 proven. 183 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-10-26 19:24:09,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197927461] [2020-10-26 19:24:09,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:24:09,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-26 19:24:09,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163941767] [2020-10-26 19:24:09,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-26 19:24:09,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:24:09,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-26 19:24:09,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2020-10-26 19:24:09,713 INFO L87 Difference]: Start difference. First operand 164 states and 178 transitions. Second operand 28 states. [2020-10-26 19:24:11,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:24:11,215 INFO L93 Difference]: Finished difference Result 226 states and 254 transitions. [2020-10-26 19:24:11,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-26 19:24:11,215 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 160 [2020-10-26 19:24:11,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:24:11,218 INFO L225 Difference]: With dead ends: 226 [2020-10-26 19:24:11,218 INFO L226 Difference]: Without dead ends: 177 [2020-10-26 19:24:11,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=441, Invalid=2109, Unknown=0, NotChecked=0, Total=2550 [2020-10-26 19:24:11,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-26 19:24:11,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 167. [2020-10-26 19:24:11,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-26 19:24:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2020-10-26 19:24:11,232 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 182 transitions. Word has length 160 [2020-10-26 19:24:11,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:24:11,233 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 182 transitions. [2020-10-26 19:24:11,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-26 19:24:11,233 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 182 transitions. [2020-10-26 19:24:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-26 19:24:11,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:24:11,234 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:24:11,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-26 19:24:11,234 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:24:11,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:24:11,235 INFO L82 PathProgramCache]: Analyzing trace with hash -527175072, now seen corresponding path program 37 times [2020-10-26 19:24:11,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:24:11,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105276384] [2020-10-26 19:24:11,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:24:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:11,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:16,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:16,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-26 19:24:16,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:24:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 19:24:16,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 19:24:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:24:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 19:24:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:16,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:24:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:16,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:16,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:16,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:24:16,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:16,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:16,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:16,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:16,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:16,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:16,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:16,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-26 19:24:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:16,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:16,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:16,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:16,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:16,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:16,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:16,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:16,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:16,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:16,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:16,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:24:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:16,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:16,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:16,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:16,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:16,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:16,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:16,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:16,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 19:24:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:16,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:16,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:16,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:16,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:16,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:16,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:16,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:16,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-26 19:24:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:16,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:16,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:16,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:16,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:16,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:24:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:16,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:16,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:16,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:16,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:16,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:16,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:16,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:16,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:16,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-26 19:24:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:16,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:16,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:16,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:16,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:16,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:16,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-26 19:24:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:16,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:16,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:16,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:16,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:16,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:16,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:16,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:16,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-26 19:24:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:16,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:16,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:16,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:16,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:16,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:16,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:16,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:16,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:16,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-26 19:24:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:16,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:16,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:16,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:16,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:16,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:16,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:16,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 20 proven. 355 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-26 19:24:16,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105276384] [2020-10-26 19:24:16,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:24:16,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-26 19:24:16,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278961006] [2020-10-26 19:24:16,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-26 19:24:16,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:24:16,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-26 19:24:16,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2020-10-26 19:24:16,962 INFO L87 Difference]: Start difference. First operand 167 states and 182 transitions. Second operand 28 states. [2020-10-26 19:24:19,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:24:19,825 INFO L93 Difference]: Finished difference Result 218 states and 242 transitions. [2020-10-26 19:24:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-26 19:24:19,825 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 163 [2020-10-26 19:24:19,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:24:19,828 INFO L225 Difference]: With dead ends: 218 [2020-10-26 19:24:19,828 INFO L226 Difference]: Without dead ends: 214 [2020-10-26 19:24:19,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=220, Invalid=3440, Unknown=0, NotChecked=0, Total=3660 [2020-10-26 19:24:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-26 19:24:19,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 175. [2020-10-26 19:24:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-26 19:24:19,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 190 transitions. [2020-10-26 19:24:19,845 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 190 transitions. Word has length 163 [2020-10-26 19:24:19,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:24:19,846 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 190 transitions. [2020-10-26 19:24:19,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-26 19:24:19,846 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 190 transitions. [2020-10-26 19:24:19,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-26 19:24:19,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:24:19,847 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:24:19,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-26 19:24:19,848 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:24:19,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:24:19,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2057783994, now seen corresponding path program 38 times [2020-10-26 19:24:19,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:24:19,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926318151] [2020-10-26 19:24:19,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:24:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:19,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:20,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:24,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:24,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 19:24:24,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:24:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 19:24:24,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-26 19:24:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:24:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 19:24:24,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:25,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:24:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:25,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:25,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:25,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:24:25,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:25,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:25,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-26 19:24:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:25,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:25,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:25,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:25,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:25,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:25,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:25,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:24:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:25,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:25,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:25,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:25,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:25,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:25,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:25,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:25,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:25,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:25,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:25,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 19:24:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:25,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:25,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:25,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:25,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:25,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:25,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:25,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:25,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:25,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:25,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:25,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-26 19:24:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:25,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:25,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:25,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:24:25,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:25,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:25,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:24:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:25,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:25,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:25,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:25,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:25,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:25,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:25,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:25,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:25,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-26 19:24:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:25,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:25,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:25,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:25,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:25,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:24:25,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:25,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:25,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-26 19:24:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:25,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:25,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:25,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:25,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:25,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:25,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:25,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:25,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:25,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-26 19:24:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:25,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:25,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:25,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:25,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:25,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:25,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:25,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-26 19:24:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:25,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:25,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:25,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:25,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:25,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:24:25,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:25,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:25,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 19:24:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:25,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:25,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:25,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:25,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:24:25,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:25,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:25,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 164 proven. 254 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2020-10-26 19:24:25,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926318151] [2020-10-26 19:24:25,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:24:25,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-26 19:24:25,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689934414] [2020-10-26 19:24:25,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-26 19:24:25,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:24:25,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-26 19:24:25,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2020-10-26 19:24:25,648 INFO L87 Difference]: Start difference. First operand 175 states and 190 transitions. Second operand 30 states. [2020-10-26 19:24:27,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:24:27,312 INFO L93 Difference]: Finished difference Result 241 states and 271 transitions. [2020-10-26 19:24:27,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-26 19:24:27,312 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 171 [2020-10-26 19:24:27,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:24:27,314 INFO L225 Difference]: With dead ends: 241 [2020-10-26 19:24:27,315 INFO L226 Difference]: Without dead ends: 188 [2020-10-26 19:24:27,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=476, Invalid=2280, Unknown=0, NotChecked=0, Total=2756 [2020-10-26 19:24:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-26 19:24:27,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 178. [2020-10-26 19:24:27,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-26 19:24:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2020-10-26 19:24:27,330 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 171 [2020-10-26 19:24:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:24:27,330 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2020-10-26 19:24:27,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-26 19:24:27,331 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2020-10-26 19:24:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-26 19:24:27,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:24:27,332 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:24:27,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-26 19:24:27,332 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:24:27,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:24:27,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1840036124, now seen corresponding path program 39 times [2020-10-26 19:24:27,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:24:27,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010263498] [2020-10-26 19:24:27,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:24:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:27,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:28,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:32,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:32,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-26 19:24:32,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:24:32,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 19:24:32,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:32,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-26 19:24:32,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:24:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-26 19:24:32,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:33,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:24:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:33,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:33,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:24:33,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:33,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:33,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:33,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:33,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:33,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:33,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:24:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:33,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:33,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:33,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:33,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:33,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:33,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:33,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:33,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:33,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:33,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:33,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:24:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:33,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:33,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:33,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:33,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:33,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:33,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:33,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:33,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:33,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:24:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:33,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:33,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:33,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:33,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:33,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:33,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:33,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:33,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-26 19:24:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:33,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:33,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:33,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:33,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:33,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:33,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:33,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:33,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:33,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:33,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:24:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:33,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:33,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:33,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:33,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:33,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:33,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-26 19:24:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:33,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:33,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:33,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:33,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:33,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:33,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:33,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:33,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-26 19:24:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:33,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:33,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:33,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:33,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:33,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:33,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:33,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:33,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:24:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:33,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:33,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:33,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:33,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:33,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:33,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:33,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:33,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:33,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:33,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:33,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-26 19:24:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:33,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:33,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:33,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:33,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:33,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:33,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:33,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:33,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-26 19:24:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:33,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:33,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:33,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:33,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:33,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 22 proven. 429 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2020-10-26 19:24:33,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010263498] [2020-10-26 19:24:33,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:24:33,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-26 19:24:33,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187198920] [2020-10-26 19:24:33,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-26 19:24:33,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:24:33,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-26 19:24:33,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=810, Unknown=0, NotChecked=0, Total=870 [2020-10-26 19:24:33,197 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand 30 states. [2020-10-26 19:24:36,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:24:36,405 INFO L93 Difference]: Finished difference Result 233 states and 259 transitions. [2020-10-26 19:24:36,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-26 19:24:36,405 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 174 [2020-10-26 19:24:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:24:36,407 INFO L225 Difference]: With dead ends: 233 [2020-10-26 19:24:36,407 INFO L226 Difference]: Without dead ends: 229 [2020-10-26 19:24:36,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=231, Invalid=3801, Unknown=0, NotChecked=0, Total=4032 [2020-10-26 19:24:36,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-26 19:24:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 186. [2020-10-26 19:24:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-26 19:24:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 202 transitions. [2020-10-26 19:24:36,423 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 202 transitions. Word has length 174 [2020-10-26 19:24:36,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:24:36,424 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 202 transitions. [2020-10-26 19:24:36,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-26 19:24:36,424 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 202 transitions. [2020-10-26 19:24:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-26 19:24:36,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:24:36,426 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:24:36,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-26 19:24:36,426 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:24:36,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:24:36,426 INFO L82 PathProgramCache]: Analyzing trace with hash -451159234, now seen corresponding path program 40 times [2020-10-26 19:24:36,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:24:36,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709643559] [2020-10-26 19:24:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:24:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:36,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:37,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:41,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:41,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-26 19:24:41,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:24:41,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 19:24:41,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-26 19:24:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:24:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-26 19:24:41,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:42,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:24:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:42,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:42,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:24:42,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:42,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:42,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:42,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:42,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:24:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:42,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:42,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:42,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:42,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:42,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:42,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:42,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:42,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:42,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:42,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:42,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:24:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:42,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:42,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:42,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:42,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:42,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:42,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:42,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:42,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:24:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:42,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:42,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:42,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:42,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:42,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:42,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:42,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:42,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:42,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:42,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:42,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-26 19:24:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:42,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:42,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:42,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:42,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:42,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:42,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:42,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:24:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:42,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:42,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:42,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:42,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:42,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-26 19:24:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:42,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:42,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:42,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:42,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:42,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:42,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:42,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:42,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-26 19:24:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:42,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:42,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:42,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:42,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:42,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:42,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:42,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:42,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:24:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:42,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:42,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:42,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:42,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:42,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:42,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:42,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:42,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-26 19:24:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:42,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:42,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:42,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:42,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:42,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:42,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:42,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:42,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:42,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:42,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:42,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-26 19:24:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:42,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:42,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:42,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:42,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:42,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:24:42,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:42,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:42,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-26 19:24:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:42,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:42,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:42,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:42,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:42,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 242 proven. 256 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2020-10-26 19:24:42,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709643559] [2020-10-26 19:24:42,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:24:42,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-26 19:24:42,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872697119] [2020-10-26 19:24:42,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-26 19:24:42,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:24:42,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-26 19:24:42,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2020-10-26 19:24:42,361 INFO L87 Difference]: Start difference. First operand 186 states and 202 transitions. Second operand 32 states. [2020-10-26 19:24:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:24:44,437 INFO L93 Difference]: Finished difference Result 252 states and 283 transitions. [2020-10-26 19:24:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-26 19:24:44,438 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 182 [2020-10-26 19:24:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:24:44,439 INFO L225 Difference]: With dead ends: 252 [2020-10-26 19:24:44,440 INFO L226 Difference]: Without dead ends: 195 [2020-10-26 19:24:44,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=625, Invalid=3035, Unknown=0, NotChecked=0, Total=3660 [2020-10-26 19:24:44,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-26 19:24:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 189. [2020-10-26 19:24:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-26 19:24:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 206 transitions. [2020-10-26 19:24:44,454 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 206 transitions. Word has length 182 [2020-10-26 19:24:44,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:24:44,455 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 206 transitions. [2020-10-26 19:24:44,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-26 19:24:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 206 transitions. [2020-10-26 19:24:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-26 19:24:44,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:24:44,456 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 14, 14, 13, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:24:44,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-26 19:24:44,456 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:24:44,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:24:44,457 INFO L82 PathProgramCache]: Analyzing trace with hash 109019348, now seen corresponding path program 41 times [2020-10-26 19:24:44,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:24:44,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041642526] [2020-10-26 19:24:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:24:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:44,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:44,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:49,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:49,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-26 19:24:49,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:24:49,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 19:24:49,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 19:24:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:24:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 19:24:49,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:24:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:49,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:49,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:49,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:24:49,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:49,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:49,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:49,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-26 19:24:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:49,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:49,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:49,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:49,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:49,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:24:49,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:24:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:49,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:24:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:49,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:49,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:49,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:49,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:24:49,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:49,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:49,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:24:49,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:49,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:49,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-26 19:24:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:49,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:49,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:49,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:49,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:49,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:24:49,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:24:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:49,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:49,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-26 19:24:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:49,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:49,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:49,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:49,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:49,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:24:49,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:49,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:49,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:24:49,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:49,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:49,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-26 19:24:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:49,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:49,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:49,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:49,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:49,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:24:49,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:49,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:49,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:24:49,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:49,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-26 19:24:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:49,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:49,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:49,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:49,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:49,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:24:49,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:24:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:49,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:49,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 19:24:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:49,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:49,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:49,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:49,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:49,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:49,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:24:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:49,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-26 19:24:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:49,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:49,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:49,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:49,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:49,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:49,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:24:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:49,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:49,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 19:24:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:49,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:49,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:49,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:49,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:49,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:49,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:24:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:49,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:49,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-26 19:24:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:49,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:49,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:49,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:49,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:49,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:24:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:49,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:49,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-26 19:24:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:49,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:49,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:49,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:49,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:49,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:49,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:24:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 22 proven. 400 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2020-10-26 19:24:49,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041642526] [2020-10-26 19:24:49,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:24:49,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-26 19:24:49,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873160412] [2020-10-26 19:24:49,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-26 19:24:49,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:24:49,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-26 19:24:49,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:24:49,907 INFO L87 Difference]: Start difference. First operand 189 states and 206 transitions. Second operand 24 states. [2020-10-26 19:24:50,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:24:50,128 INFO L93 Difference]: Finished difference Result 334 states and 368 transitions. [2020-10-26 19:24:50,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 19:24:50,129 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 185 [2020-10-26 19:24:50,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:24:50,130 INFO L225 Difference]: With dead ends: 334 [2020-10-26 19:24:50,130 INFO L226 Difference]: Without dead ends: 192 [2020-10-26 19:24:50,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:24:50,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-26 19:24:50,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2020-10-26 19:24:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-26 19:24:50,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 208 transitions. [2020-10-26 19:24:50,144 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 208 transitions. Word has length 185 [2020-10-26 19:24:50,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:24:50,144 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 208 transitions. [2020-10-26 19:24:50,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-26 19:24:50,145 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 208 transitions. [2020-10-26 19:24:50,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-26 19:24:50,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:24:50,146 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 14, 14, 13, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:24:50,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-26 19:24:50,146 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:24:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:24:50,147 INFO L82 PathProgramCache]: Analyzing trace with hash -675214798, now seen corresponding path program 42 times [2020-10-26 19:24:50,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:24:50,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765776521] [2020-10-26 19:24:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:24:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:50,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:51,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:55,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:55,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-26 19:24:55,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:24:55,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 19:24:55,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-26 19:24:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:24:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 19:24:55,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:55,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:24:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:55,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:55,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:55,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:24:55,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:55,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:55,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:55,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:24:55,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:55,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:24:55,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:55,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:24:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:55,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:55,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:55,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:55,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:55,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:55,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:55,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:55,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:55,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:55,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:55,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 19:24:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:55,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:55,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:55,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:55,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:55,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:24:55,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:55,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:55,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:55,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:55,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:56,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-26 19:24:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:56,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:56,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:56,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:56,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:56,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:56,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:56,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:56,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:24:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:56,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:56,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:56,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:56,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:56,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:56,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-26 19:24:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:56,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:56,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:56,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:56,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:56,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:56,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:56,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:56,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:56,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:56,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:56,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-26 19:24:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:56,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:56,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:56,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:56,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:56,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:56,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:56,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:56,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-26 19:24:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:56,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:56,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:56,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:56,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:56,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:56,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:56,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:56,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-26 19:24:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:56,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:56,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:56,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:56,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:56,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:56,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:56,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:56,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:56,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:56,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:56,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 19:24:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:56,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:56,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:56,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:56,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:56,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:56,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:56,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:56,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:56,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:56,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-26 19:24:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:56,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:56,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:56,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:56,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:56,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:56,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:56,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:56,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:56,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-26 19:24:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:24:56,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:24:56,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:24:56,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:24:56,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:24:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:24:56,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:24:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:24:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:24:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:24:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:24:56,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 24 proven. 510 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-26 19:24:56,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765776521] [2020-10-26 19:24:56,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:24:56,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-26 19:24:56,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698195081] [2020-10-26 19:24:56,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-26 19:24:56,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:24:56,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-26 19:24:56,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=930, Unknown=0, NotChecked=0, Total=992 [2020-10-26 19:24:56,095 INFO L87 Difference]: Start difference. First operand 191 states and 208 transitions. Second operand 32 states. [2020-10-26 19:25:00,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:25:00,128 INFO L93 Difference]: Finished difference Result 250 states and 278 transitions. [2020-10-26 19:25:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-26 19:25:00,128 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 187 [2020-10-26 19:25:00,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:25:00,131 INFO L225 Difference]: With dead ends: 250 [2020-10-26 19:25:00,131 INFO L226 Difference]: Without dead ends: 246 [2020-10-26 19:25:00,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=258, Invalid=4712, Unknown=0, NotChecked=0, Total=4970 [2020-10-26 19:25:00,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-26 19:25:00,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 199. [2020-10-26 19:25:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-26 19:25:00,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 216 transitions. [2020-10-26 19:25:00,147 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 216 transitions. Word has length 187 [2020-10-26 19:25:00,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:25:00,148 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 216 transitions. [2020-10-26 19:25:00,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-26 19:25:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 216 transitions. [2020-10-26 19:25:00,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-26 19:25:00,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:25:00,150 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:25:00,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-26 19:25:00,150 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:25:00,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:25:00,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1158647668, now seen corresponding path program 43 times [2020-10-26 19:25:00,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:25:00,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075789591] [2020-10-26 19:25:00,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:25:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:00,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:00,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-26 19:25:05,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:25:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 19:25:05,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:25:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:25:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-26 19:25:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:25:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:25:05,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:25:05,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:25:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:25:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:05,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:05,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:05,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:05,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 19:25:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:05,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:05,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:05,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:05,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-26 19:25:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:05,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:25:05,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:25:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:05,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:05,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:25:05,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-26 19:25:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:05,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:05,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:25:05,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:05,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:05,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:05,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-26 19:25:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:05,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:05,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:25:05,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:05,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:05,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:05,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-26 19:25:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:05,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:05,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:25:05,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:05,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-26 19:25:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:05,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:25:05,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 19:25:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:05,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:05,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:25:05,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:05,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-26 19:25:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:05,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:05,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:25:05,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:05,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:05,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:05,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-26 19:25:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:05,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:25:05,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:05,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-26 19:25:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:05,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:05,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:05,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:05,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:25:05,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:05,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1290 backedges. 24 proven. 441 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2020-10-26 19:25:05,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075789591] [2020-10-26 19:25:05,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:25:05,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-26 19:25:05,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287807024] [2020-10-26 19:25:05,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 19:25:05,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:25:05,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 19:25:05,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:25:05,614 INFO L87 Difference]: Start difference. First operand 199 states and 216 transitions. Second operand 25 states. [2020-10-26 19:25:05,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:25:05,757 INFO L93 Difference]: Finished difference Result 352 states and 386 transitions. [2020-10-26 19:25:05,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 19:25:05,757 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 195 [2020-10-26 19:25:05,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:25:05,759 INFO L225 Difference]: With dead ends: 352 [2020-10-26 19:25:05,759 INFO L226 Difference]: Without dead ends: 202 [2020-10-26 19:25:05,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:25:05,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-26 19:25:05,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2020-10-26 19:25:05,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-26 19:25:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 218 transitions. [2020-10-26 19:25:05,774 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 218 transitions. Word has length 195 [2020-10-26 19:25:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:25:05,774 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 218 transitions. [2020-10-26 19:25:05,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 19:25:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 218 transitions. [2020-10-26 19:25:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-26 19:25:05,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:25:05,776 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:25:05,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-26 19:25:05,776 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:25:05,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:25:05,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1097573270, now seen corresponding path program 44 times [2020-10-26 19:25:05,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:25:05,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729855033] [2020-10-26 19:25:05,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:25:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:06,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:10,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:10,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-26 19:25:10,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:25:10,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 19:25:10,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 19:25:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:25:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 19:25:10,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:25:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:11,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:25:11,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:11,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:25:11,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:25:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:11,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-26 19:25:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:11,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:11,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:11,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 19:25:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:11,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:11,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:11,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:11,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:11,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-26 19:25:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:11,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:11,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:11,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-26 19:25:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:11,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:11,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:11,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:11,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:11,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-26 19:25:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:11,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:11,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:11,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:11,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:11,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 19:25:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:11,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:11,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:25:11,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:11,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-26 19:25:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:11,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:11,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:11,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:25:11,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:11,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:11,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:11,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:11,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-26 19:25:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:11,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:11,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:11,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:25:11,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:11,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-26 19:25:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:11,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:11,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:11,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:11,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-26 19:25:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:11,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:11,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:11,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:11,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-26 19:25:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:11,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:11,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:11,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-26 19:25:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:11,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:11,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:11,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:11,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:11,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:11,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:11,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:11,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 24 proven. 484 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2020-10-26 19:25:11,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729855033] [2020-10-26 19:25:11,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:25:11,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-26 19:25:11,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595687869] [2020-10-26 19:25:11,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-26 19:25:11,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:25:11,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-26 19:25:11,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:25:11,298 INFO L87 Difference]: Start difference. First operand 201 states and 218 transitions. Second operand 26 states. [2020-10-26 19:25:11,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:25:11,472 INFO L93 Difference]: Finished difference Result 354 states and 388 transitions. [2020-10-26 19:25:11,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 19:25:11,473 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 197 [2020-10-26 19:25:11,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:25:11,475 INFO L225 Difference]: With dead ends: 354 [2020-10-26 19:25:11,475 INFO L226 Difference]: Without dead ends: 204 [2020-10-26 19:25:11,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:25:11,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-26 19:25:11,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2020-10-26 19:25:11,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-26 19:25:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 220 transitions. [2020-10-26 19:25:11,490 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 220 transitions. Word has length 197 [2020-10-26 19:25:11,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:25:11,490 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 220 transitions. [2020-10-26 19:25:11,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-26 19:25:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 220 transitions. [2020-10-26 19:25:11,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-26 19:25:11,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:25:11,492 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:25:11,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-26 19:25:11,492 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:25:11,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:25:11,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1760348360, now seen corresponding path program 45 times [2020-10-26 19:25:11,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:25:11,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358678628] [2020-10-26 19:25:11,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:25:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:11,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-26 19:25:16,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:25:16,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 19:25:16,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-26 19:25:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:25:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-26 19:25:16,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:16,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:25:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:16,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:25:16,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:16,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:25:16,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:25:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:16,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:16,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-26 19:25:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:16,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:16,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:16,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-26 19:25:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:16,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:16,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:16,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:16,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:16,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:16,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-26 19:25:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:16,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:16,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:16,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:16,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:16,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:16,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-26 19:25:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:16,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:16,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:16,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:16,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:16,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:16,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:16,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:16,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-26 19:25:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:16,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:16,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:16,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:16,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:16,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:16,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-26 19:25:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:16,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:16,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:16,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:16,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:16,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:16,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-26 19:25:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:16,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:16,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:16,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:16,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:16,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:16,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:16,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:16,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 19:25:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:16,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:16,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:16,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:16,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:16,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:16,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-26 19:25:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:16,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:16,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:16,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:16,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:16,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:16,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-26 19:25:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:16,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:16,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:16,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:16,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:16,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:16,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:16,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:16,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-26 19:25:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:16,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:16,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:16,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:16,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:16,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:16,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-26 19:25:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:16,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:16,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:16,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:25:16,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:25:16,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:25:16,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:25:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:25:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:25:16,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:25:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 24 proven. 529 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2020-10-26 19:25:17,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358678628] [2020-10-26 19:25:17,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:25:17,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-26 19:25:17,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579672794] [2020-10-26 19:25:17,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-26 19:25:17,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:25:17,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-26 19:25:17,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-26 19:25:17,005 INFO L87 Difference]: Start difference. First operand 203 states and 220 transitions. Second operand 27 states. [2020-10-26 19:25:17,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:25:17,230 INFO L93 Difference]: Finished difference Result 356 states and 390 transitions. [2020-10-26 19:25:17,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-26 19:25:17,230 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 199 [2020-10-26 19:25:17,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:25:17,232 INFO L225 Difference]: With dead ends: 356 [2020-10-26 19:25:17,232 INFO L226 Difference]: Without dead ends: 206 [2020-10-26 19:25:17,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-26 19:25:17,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-26 19:25:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 205. [2020-10-26 19:25:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-26 19:25:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 222 transitions. [2020-10-26 19:25:17,247 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 222 transitions. Word has length 199 [2020-10-26 19:25:17,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:25:17,248 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 222 transitions. [2020-10-26 19:25:17,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-26 19:25:17,248 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 222 transitions. [2020-10-26 19:25:17,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-26 19:25:17,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:25:17,249 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:25:17,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-26 19:25:17,250 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:25:17,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:25:17,250 INFO L82 PathProgramCache]: Analyzing trace with hash -556034650, now seen corresponding path program 46 times [2020-10-26 19:25:17,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:25:17,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724635714] [2020-10-26 19:25:17,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:25:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:25:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:18,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:25:22,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:25:22,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-26 19:25:22,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:25:22,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 19:25:22,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:25:22,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-26 19:25:22,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:25:22,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-26 19:25:22,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0