/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=DEEPEST --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/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:04:33,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:04:33,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:04:33,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:04:33,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:04:33,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:04:33,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:04:33,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:04:33,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:04:33,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:04:33,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:04:33,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:04:33,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:04:33,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:04:33,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:04:33,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:04:33,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:04:33,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:04:33,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:04:33,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:04:33,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:04:33,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:04:33,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:04:33,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:04:33,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:04:33,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:04:33,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:04:33,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:04:33,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:04:33,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:04:33,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:04:33,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:04:33,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:04:33,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:04:33,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:04:33,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:04:33,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:04:33,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:04:33,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:04:33,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:04:33,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:04:33,295 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 [2020-10-27 23:04:33,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:04:33,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:04:33,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:04:33,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:04:33,357 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:04:33,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:04:33,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:04:33,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:04:33,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:04:33,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:04:33,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:04:33,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:04:33,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:04:33,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:04:33,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:04:33,361 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:04:33,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:04:33,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:04:33,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:04:33,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:04:33,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:04:33,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:04:33,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:04:33,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:04:33,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:04:33,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:04:33,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:04:33,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:04:33,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:04:33,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:04:33,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:04:33,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:04:33,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:04:33,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:04:33,804 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:04:33,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2020-10-27 23:04:33,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6d180f06/7f1c0d35abd94f0f8c25d4db25d6d3b7/FLAG891e65177 [2020-10-27 23:04:34,625 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:04:34,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2020-10-27 23:04:34,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6d180f06/7f1c0d35abd94f0f8c25d4db25d6d3b7/FLAG891e65177 [2020-10-27 23:04:34,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6d180f06/7f1c0d35abd94f0f8c25d4db25d6d3b7 [2020-10-27 23:04:34,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:04:34,969 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:04:34,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:04:34,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:04:34,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:04:34,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:04:34" (1/1) ... [2020-10-27 23:04:34,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366ae672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:34, skipping insertion in model container [2020-10-27 23:04:34,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:04:34" (1/1) ... [2020-10-27 23:04:34,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:04:35,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:04:35,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:04:35,336 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:04:35,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:04:35,466 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:04:35,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:35 WrapperNode [2020-10-27 23:04:35,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:04:35,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:04:35,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:04:35,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:04:35,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:35" (1/1) ... [2020-10-27 23:04:35,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:35" (1/1) ... [2020-10-27 23:04:35,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:35" (1/1) ... [2020-10-27 23:04:35,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:35" (1/1) ... [2020-10-27 23:04:35,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:35" (1/1) ... [2020-10-27 23:04:35,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:35" (1/1) ... [2020-10-27 23:04:35,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:35" (1/1) ... [2020-10-27 23:04:35,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:04:35,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:04:35,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:04:35,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:04:35,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:35" (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 [2020-10-27 23:04:35,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:04:35,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:04:35,631 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:04:35,631 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 23:04:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 23:04:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 23:04:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 23:04:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 23:04:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 23:04:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:04:35,633 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 23:04:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:04:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:04:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:04:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:04:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:04:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:04:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:04:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:04:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:04:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:04:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:04:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:04:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:04:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:04:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:04:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:04:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:04:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:04:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:04:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:04:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:04:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:04:36,520 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:04:36,521 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 23:04:36,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:04:36 BoogieIcfgContainer [2020-10-27 23:04:36,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:04:36,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:04:36,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:04:36,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:04:36,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:04:34" (1/3) ... [2020-10-27 23:04:36,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b306b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:04:36, skipping insertion in model container [2020-10-27 23:04:36,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:35" (2/3) ... [2020-10-27 23:04:36,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b306b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:04:36, skipping insertion in model container [2020-10-27 23:04:36,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:04:36" (3/3) ... [2020-10-27 23:04:36,533 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2020-10-27 23:04:36,546 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:04:36,552 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:04:36,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:04:36,598 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:04:36,598 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:04:36,599 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:04:36,599 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:04:36,599 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:04:36,599 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:04:36,599 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:04:36,600 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:04:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2020-10-27 23:04:36,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 23:04:36,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:36,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:04:36,633 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:36,640 INFO L82 PathProgramCache]: Analyzing trace with hash -710978234, now seen corresponding path program 1 times [2020-10-27 23:04:36,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:36,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290748069] [2020-10-27 23:04:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:36,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:37,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:37,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 23:04:37,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:37,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-27 23:04:37,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 23:04:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:37,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:04:37,586 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:37,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:37,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:37,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:37,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:37,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:37,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 23:04:37,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:37,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:37,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:37,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:37,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:37,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:37,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:37,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:37,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:37,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:04:37,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:37,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:37,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 23:04:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:37,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:37,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:37,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:37,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:04:37,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:37,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:04:37,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 23:04:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:37,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:37,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:37,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:37,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:37,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:04:37,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:37,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 23:04:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:37,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:37,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:37,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:37,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:04:37,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:37,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:37,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 23:04:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:37,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:37,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:37,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:37,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:37,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:04:37,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:37,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 23:04:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:37,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:37,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:37,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:37,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:04:37,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:04:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:37,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:04:37,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290748069] [2020-10-27 23:04:37,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:37,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:04:37,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868234578] [2020-10-27 23:04:37,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:04:37,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:38,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:04:38,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:04:38,010 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 7 states. [2020-10-27 23:04:39,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:39,024 INFO L93 Difference]: Finished difference Result 232 states and 341 transitions. [2020-10-27 23:04:39,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:04:39,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-10-27 23:04:39,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:39,039 INFO L225 Difference]: With dead ends: 232 [2020-10-27 23:04:39,039 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 23:04:39,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:04:39,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 23:04:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2020-10-27 23:04:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 23:04:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 189 transitions. [2020-10-27 23:04:39,117 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 189 transitions. Word has length 57 [2020-10-27 23:04:39,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:39,117 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 189 transitions. [2020-10-27 23:04:39,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:04:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 189 transitions. [2020-10-27 23:04:39,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 23:04:39,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:39,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:04:39,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:04:39,122 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:39,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:39,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1534601220, now seen corresponding path program 1 times [2020-10-27 23:04:39,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:39,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910226020] [2020-10-27 23:04:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:39,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:39,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 23:04:39,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:39,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-10-27 23:04:39,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:04:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:04:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:04:39,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:40,083 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:40,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:40,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:40,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:40,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:40,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:40,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 23:04:40,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:40,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:40,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:40,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:40,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:40,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:40,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:40,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:40,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:40,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:04:40,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:04:40,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:40,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 23:04:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:40,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:40,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:40,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:40,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:40,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:04:40,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:40,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:40,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:40,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 23:04:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:40,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:40,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:40,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:40,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:40,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:04:40,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:40,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 23:04:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:40,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:40,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:40,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:40,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:40,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:04:40,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:40,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:40,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 23:04:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:40,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:40,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:40,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:40,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:40,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:04:40,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:40,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:40,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:40,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 23:04:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:40,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:40,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:40,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:40,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:40,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:04:40,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:40,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:40,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:04:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:40,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:04:40,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910226020] [2020-10-27 23:04:40,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:40,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:04:40,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079564746] [2020-10-27 23:04:40,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:04:40,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:40,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:04:40,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:04:40,386 INFO L87 Difference]: Start difference. First operand 126 states and 189 transitions. Second operand 11 states. [2020-10-27 23:04:40,702 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:04:40,973 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:04:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:42,645 INFO L93 Difference]: Finished difference Result 234 states and 342 transitions. [2020-10-27 23:04:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 23:04:42,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-27 23:04:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:42,655 INFO L225 Difference]: With dead ends: 234 [2020-10-27 23:04:42,656 INFO L226 Difference]: Without dead ends: 140 [2020-10-27 23:04:42,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 23:04:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-27 23:04:42,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 126. [2020-10-27 23:04:42,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 23:04:42,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 165 transitions. [2020-10-27 23:04:42,693 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 165 transitions. Word has length 57 [2020-10-27 23:04:42,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:42,694 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 165 transitions. [2020-10-27 23:04:42,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:04:42,694 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 165 transitions. [2020-10-27 23:04:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 23:04:42,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:42,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:04:42,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:04:42,699 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:42,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:42,702 INFO L82 PathProgramCache]: Analyzing trace with hash 200587290, now seen corresponding path program 1 times [2020-10-27 23:04:42,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:42,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158730995] [2020-10-27 23:04:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:42,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:42,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:43,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:43,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:47,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:47,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 23:04:47,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:04:47,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 23:04:47,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 23:04:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 23:04:47,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:04:47,994 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:47,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:48,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:48,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:48,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:48,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:48,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:04:48,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:48,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:48,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:48,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:48,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:48,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:48,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:48,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:48,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:04:48,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:48,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:04:48,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:48,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 23:04:48,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:48,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:04:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:48,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:48,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:48,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:48,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:48,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:04:48,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:48,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:48,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:48,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:04:48,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:48,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:04:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:48,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:48,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:48,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:48,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:04:48,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:48,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:04:48,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:48,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 23:04:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:48,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:48,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:48,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:48,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:48,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:04:48,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:04:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 19 [2020-10-27 23:04:48,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 23:04:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:48,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:48,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:48,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:48,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:48,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:04:48,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:04:48,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:48,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:04:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:48,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:48,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:48,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:48,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:48,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:04:48,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:48,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:48,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:04:48,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:48,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:04:48,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158730995] [2020-10-27 23:04:48,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:48,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:04:48,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804324964] [2020-10-27 23:04:48,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:04:48,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:48,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:04:48,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:04:48,347 INFO L87 Difference]: Start difference. First operand 126 states and 165 transitions. Second operand 10 states. [2020-10-27 23:04:48,582 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:04:50,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:50,442 INFO L93 Difference]: Finished difference Result 297 states and 408 transitions. [2020-10-27 23:04:50,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:04:50,443 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-27 23:04:50,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:50,448 INFO L225 Difference]: With dead ends: 297 [2020-10-27 23:04:50,448 INFO L226 Difference]: Without dead ends: 209 [2020-10-27 23:04:50,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:04:50,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-27 23:04:50,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2020-10-27 23:04:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-27 23:04:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 270 transitions. [2020-10-27 23:04:50,496 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 270 transitions. Word has length 80 [2020-10-27 23:04:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:50,499 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 270 transitions. [2020-10-27 23:04:50,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:04:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 270 transitions. [2020-10-27 23:04:50,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 23:04:50,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:50,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:04:50,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:04:50,507 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:50,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:50,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1931537424, now seen corresponding path program 1 times [2020-10-27 23:04:50,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:50,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716703255] [2020-10-27 23:04:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:50,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:50,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:50,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:51,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:55,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:55,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:04:55,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:04:55,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 23:04:55,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 23:04:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 23:04:55,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:04:55,790 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:55,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:55,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:55,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:55,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:55,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:55,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:04:55,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:55,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:55,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:55,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:55,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:55,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:55,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:55,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:55,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:04:55,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 23:04:55,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 23:04:55,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:55,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:04:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:55,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:55,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:55,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:55,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:55,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:04:55,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:04:55,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:55,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:04:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:55,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:55,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:55,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:55,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:55,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:04:55,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:04:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:04:55,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 23:04:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:55,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:55,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:55,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:55,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:04:55,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:04:55,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:56,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 23:04:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:56,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:56,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:56,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:56,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:56,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:04:56,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:04:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:56,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:56,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 23:04:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:56,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:56,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:56,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:56,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:04:56,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:56,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:56,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:04:56,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:56,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:04:56,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716703255] [2020-10-27 23:04:56,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:56,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:04:56,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370199984] [2020-10-27 23:04:56,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:04:56,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:56,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:04:56,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:04:56,087 INFO L87 Difference]: Start difference. First operand 199 states and 270 transitions. Second operand 10 states. [2020-10-27 23:04:56,319 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:04:58,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:58,396 INFO L93 Difference]: Finished difference Result 509 states and 710 transitions. [2020-10-27 23:04:58,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:04:58,397 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-27 23:04:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:58,400 INFO L225 Difference]: With dead ends: 509 [2020-10-27 23:04:58,400 INFO L226 Difference]: Without dead ends: 348 [2020-10-27 23:04:58,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:04:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-27 23:04:58,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 333. [2020-10-27 23:04:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-27 23:04:58,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 460 transitions. [2020-10-27 23:04:58,472 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 460 transitions. Word has length 81 [2020-10-27 23:04:58,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:58,474 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 460 transitions. [2020-10-27 23:04:58,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:04:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 460 transitions. [2020-10-27 23:04:58,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 23:04:58,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:58,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:04:58,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:04:58,481 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:58,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1313995112, now seen corresponding path program 1 times [2020-10-27 23:04:58,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:58,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604835526] [2020-10-27 23:04:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:58,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:58,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:58,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 23:05:01,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 23:05:01,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2615 [2020-10-27 23:05:01,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:01,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 23:05:01,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 23:05:01,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,376 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:05:01,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:01,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:05:01,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:01,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:05:01,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:05:01,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:01,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:01,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:05:01,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:05:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:01,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:05:01,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:01,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:05:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:01,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:05:01,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:01,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:05:01,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 23:05:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:01,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:01,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:01,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:05:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:01,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:01,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:01,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:01,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:01,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 23:05:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:05:01,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:05:01,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:05:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:01,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:05:01,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604835526] [2020-10-27 23:05:01,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:01,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:05:01,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114009118] [2020-10-27 23:05:01,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:05:01,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:01,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:05:01,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:05:01,644 INFO L87 Difference]: Start difference. First operand 333 states and 460 transitions. Second operand 10 states. [2020-10-27 23:05:01,904 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:05:04,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:04,066 INFO L93 Difference]: Finished difference Result 895 states and 1252 transitions. [2020-10-27 23:05:04,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:05:04,067 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-10-27 23:05:04,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:04,074 INFO L225 Difference]: With dead ends: 895 [2020-10-27 23:05:04,074 INFO L226 Difference]: Without dead ends: 600 [2020-10-27 23:05:04,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:05:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-10-27 23:05:04,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 577. [2020-10-27 23:05:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-10-27 23:05:04,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 800 transitions. [2020-10-27 23:05:04,150 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 800 transitions. Word has length 82 [2020-10-27 23:05:04,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:04,152 INFO L481 AbstractCegarLoop]: Abstraction has 577 states and 800 transitions. [2020-10-27 23:05:04,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:05:04,152 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 800 transitions. [2020-10-27 23:05:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 23:05:04,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:04,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:05:04,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:05:04,154 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:04,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:04,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1357684812, now seen corresponding path program 1 times [2020-10-27 23:05:04,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:04,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069611128] [2020-10-27 23:05:04,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:04,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:05,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:05,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 23:05:05,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:05:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1159 [2020-10-27 23:05:05,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 23:05:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:05:05,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:05,555 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:05:05,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:05,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:05,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:05,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:05,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:05:05,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:05,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:05,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:05,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:05,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:05,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:05:05,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:05,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:05:05,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:05,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:05,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:05:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:05,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:05,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:05,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:05,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:05:05,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:05:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:05,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:05:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:05,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:05,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:05,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:05,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:05,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:05,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:05,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:05,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:05,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:05:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:05,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:05,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:05,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:05,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:05:05,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:05,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 23:05:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:05,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:05,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:05,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:05,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:05,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:05:05,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:05,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:05,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 23:05:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:05,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:05,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:05,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:05:05,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:05,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:05:05,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:05:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:05,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:05:05,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069611128] [2020-10-27 23:05:05,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:05,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:05:05,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107758610] [2020-10-27 23:05:05,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:05:05,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:05,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:05:05,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:05:05,819 INFO L87 Difference]: Start difference. First operand 577 states and 800 transitions. Second operand 10 states. [2020-10-27 23:05:06,054 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:05:08,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:08,184 INFO L93 Difference]: Finished difference Result 1591 states and 2212 transitions. [2020-10-27 23:05:08,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:05:08,185 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-10-27 23:05:08,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:08,193 INFO L225 Difference]: With dead ends: 1591 [2020-10-27 23:05:08,193 INFO L226 Difference]: Without dead ends: 1052 [2020-10-27 23:05:08,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:05:08,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-27 23:05:08,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1017. [2020-10-27 23:05:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2020-10-27 23:05:08,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1400 transitions. [2020-10-27 23:05:08,308 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1400 transitions. Word has length 83 [2020-10-27 23:05:08,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:08,309 INFO L481 AbstractCegarLoop]: Abstraction has 1017 states and 1400 transitions. [2020-10-27 23:05:08,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:05:08,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1400 transitions. [2020-10-27 23:05:08,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 23:05:08,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:08,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:05:08,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:05:08,311 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:08,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:08,311 INFO L82 PathProgramCache]: Analyzing trace with hash -715495540, now seen corresponding path program 1 times [2020-10-27 23:05:08,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:08,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020339872] [2020-10-27 23:05:08,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:08,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:08,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:10,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:10,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 23:05:10,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:05:10,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2571 [2020-10-27 23:05:10,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 23:05:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:05:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 23:05:10,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:11,155 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:05:11,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:11,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:11,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:11,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:11,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:11,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:05:11,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:11,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:11,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:11,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:11,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:11,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:11,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:11,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:05:11,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:11,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 23:05:11,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:05:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 23:05:11,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:11,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:05:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:11,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:11,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:11,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:11,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:11,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:05:11,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:05:11,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 23:05:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:11,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:11,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:11,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:11,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:05:11,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:05:11,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:05:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:11,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:11,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:11,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:11,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:11,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:05:11,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:05:11,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:11,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:05:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:11,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:11,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:11,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:11,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:11,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:05:11,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:11,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:11,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:05:11,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:11,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 23:05:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:11,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:11,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:11,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:05:11,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:05:11,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:05:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:05:11,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:05:11,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020339872] [2020-10-27 23:05:11,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:11,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 23:05:11,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580624335] [2020-10-27 23:05:11,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 23:05:11,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:11,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 23:05:11,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-10-27 23:05:11,617 INFO L87 Difference]: Start difference. First operand 1017 states and 1400 transitions. Second operand 16 states. [2020-10-27 23:05:11,894 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:05:12,166 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:05:12,420 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:05:12,689 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 23:05:14,045 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:05:14,946 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 23:05:15,410 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 23:05:16,018 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 149 [2020-10-27 23:05:16,500 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-27 23:05:17,023 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 148 [2020-10-27 23:05:17,540 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-27 23:05:18,663 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-27 23:05:19,852 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 23:05:19,999 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 23:05:20,155 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-27 23:05:21,438 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-27 23:05:21,600 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-27 23:05:21,997 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 23:05:22,584 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 23:05:22,990 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-27 23:05:23,175 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-27 23:05:23,756 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-27 23:05:24,398 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-27 23:05:25,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:25,675 INFO L93 Difference]: Finished difference Result 10668 states and 15098 transitions. [2020-10-27 23:05:25,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-27 23:05:25,676 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-10-27 23:05:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:25,739 INFO L225 Difference]: With dead ends: 10668 [2020-10-27 23:05:25,740 INFO L226 Difference]: Without dead ends: 9689 [2020-10-27 23:05:25,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1136, Invalid=4414, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 23:05:25,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9689 states. [2020-10-27 23:05:26,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9689 to 6985. [2020-10-27 23:05:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6985 states. [2020-10-27 23:05:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6985 states to 6985 states and 9760 transitions. [2020-10-27 23:05:26,432 INFO L78 Accepts]: Start accepts. Automaton has 6985 states and 9760 transitions. Word has length 84 [2020-10-27 23:05:26,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:26,433 INFO L481 AbstractCegarLoop]: Abstraction has 6985 states and 9760 transitions. [2020-10-27 23:05:26,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 23:05:26,433 INFO L276 IsEmpty]: Start isEmpty. Operand 6985 states and 9760 transitions. [2020-10-27 23:05:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 23:05:26,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:26,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:05:26,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:05:26,435 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:26,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:26,436 INFO L82 PathProgramCache]: Analyzing trace with hash 570671784, now seen corresponding path program 1 times [2020-10-27 23:05:26,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:26,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234039543] [2020-10-27 23:05:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:27,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:27,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:05:27,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:05:27,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-27 23:05:27,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:05:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 23:05:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:05:27,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:27,812 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:05:27,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:27,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:27,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:27,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:05:27,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:27,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:27,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:27,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:27,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:05:27,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:27,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:05:27,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:27,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:27,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:05:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:27,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:27,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:27,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:27,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:27,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:27,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 23:05:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:27,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:27,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:27,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:27,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:05:27,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:27,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:27,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:27,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:05:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:27,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:27,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:27,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:27,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:27,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:27,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:27,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:27,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:27,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:27,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:28,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:05:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:28,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:28,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:28,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:28,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:28,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:05:28,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:28,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:28,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 23:05:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:28,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:28,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:28,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:28,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:05:28,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 23:05:28,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:05:28,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234039543] [2020-10-27 23:05:28,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:28,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 23:05:28,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864808984] [2020-10-27 23:05:28,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 23:05:28,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:28,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 23:05:28,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:05:28,089 INFO L87 Difference]: Start difference. First operand 6985 states and 9760 transitions. Second operand 13 states. [2020-10-27 23:05:29,277 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:05:29,500 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:05:29,744 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:05:29,991 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 23:05:31,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:31,022 INFO L93 Difference]: Finished difference Result 9052 states and 12874 transitions. [2020-10-27 23:05:31,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 23:05:31,023 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 85 [2020-10-27 23:05:31,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:31,084 INFO L225 Difference]: With dead ends: 9052 [2020-10-27 23:05:31,084 INFO L226 Difference]: Without dead ends: 9049 [2020-10-27 23:05:31,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-27 23:05:31,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9049 states. [2020-10-27 23:05:31,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9049 to 7849. [2020-10-27 23:05:31,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7849 states. [2020-10-27 23:05:31,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7849 states to 7849 states and 10624 transitions. [2020-10-27 23:05:31,999 INFO L78 Accepts]: Start accepts. Automaton has 7849 states and 10624 transitions. Word has length 85 [2020-10-27 23:05:32,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:32,000 INFO L481 AbstractCegarLoop]: Abstraction has 7849 states and 10624 transitions. [2020-10-27 23:05:32,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 23:05:32,000 INFO L276 IsEmpty]: Start isEmpty. Operand 7849 states and 10624 transitions. [2020-10-27 23:05:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 23:05:32,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:32,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:05:32,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:05:32,002 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:32,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:32,002 INFO L82 PathProgramCache]: Analyzing trace with hash -772907980, now seen corresponding path program 1 times [2020-10-27 23:05:32,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:32,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294211046] [2020-10-27 23:05:32,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:32,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:32,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:05:32,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:05:32,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-10-27 23:05:32,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:05:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 23:05:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 23:05:32,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:33,151 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:05:33,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:33,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:33,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:33,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:33,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:33,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:05:33,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:33,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:33,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:33,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:33,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:33,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:33,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:33,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:33,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:05:33,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:33,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:05:33,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:33,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:33,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:33,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 23:05:33,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:33,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:05:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:33,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:33,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:33,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:33,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:05:33,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:05:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:05:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:33,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 23:05:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:33,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:33,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:33,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:33,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:05:33,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:05:33,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:33,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:05:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:33,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:05:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:33,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:33,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:33,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:33,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:33,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:05:33,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:05:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:05:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:33,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:05:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:33,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:33,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:33,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:33,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:05:33,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:33,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:33,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 23:05:33,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:05:33,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 23:05:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:33,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:33,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:33,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:33,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:33,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:33,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:33,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:33,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:33,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:05:33,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294211046] [2020-10-27 23:05:33,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:33,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 23:05:33,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723584] [2020-10-27 23:05:33,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 23:05:33,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:33,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 23:05:33,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-27 23:05:33,579 INFO L87 Difference]: Start difference. First operand 7849 states and 10624 transitions. Second operand 15 states. [2020-10-27 23:05:33,859 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:05:34,091 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:05:34,600 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 23:05:35,187 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 23:05:35,471 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 23:05:35,708 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 23:05:36,620 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 23:05:36,918 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 23:05:37,168 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:05:37,419 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 23:05:37,683 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:05:38,166 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:05:38,438 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:05:39,828 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:05:40,094 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 23:05:40,354 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:05:40,642 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 23:05:40,908 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:05:41,173 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 23:05:41,560 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:05:41,822 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:05:42,112 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:05:42,378 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:05:42,633 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:05:42,931 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:05:43,796 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:05:44,050 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 23:05:50,108 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 23:06:01,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:06:01,939 INFO L93 Difference]: Finished difference Result 89644 states and 125636 transitions. [2020-10-27 23:06:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-10-27 23:06:01,940 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 86 [2020-10-27 23:06:01,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:06:02,341 INFO L225 Difference]: With dead ends: 89644 [2020-10-27 23:06:02,341 INFO L226 Difference]: Without dead ends: 81833 [2020-10-27 23:06:02,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7338 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=2317, Invalid=16589, Unknown=0, NotChecked=0, Total=18906 [2020-10-27 23:06:02,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81833 states. [2020-10-27 23:06:09,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81833 to 80689. [2020-10-27 23:06:09,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80689 states. [2020-10-27 23:06:09,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80689 states to 80689 states and 104408 transitions. [2020-10-27 23:06:09,870 INFO L78 Accepts]: Start accepts. Automaton has 80689 states and 104408 transitions. Word has length 86 [2020-10-27 23:06:09,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:06:09,870 INFO L481 AbstractCegarLoop]: Abstraction has 80689 states and 104408 transitions. [2020-10-27 23:06:09,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 23:06:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 80689 states and 104408 transitions. [2020-10-27 23:06:09,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 23:06:09,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:06:09,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:06:09,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:06:09,873 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:06:09,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:06:09,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1356410875, now seen corresponding path program 1 times [2020-10-27 23:06:09,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:06:09,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617814408] [2020-10-27 23:06:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:06:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:09,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:10,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:10,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 23:06:10,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:10,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-27 23:06:10,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:10,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:06:10,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:06:10,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 23:06:10,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:10,704 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:06:10,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:06:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:10,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:10,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:06:10,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:06:10,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:10,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:06:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:10,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:10,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:10,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:06:10,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:06:10,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:06:10,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:10,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:06:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:10,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:10,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:10,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:10,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:06:10,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:06:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:06:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:06:10,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:10,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 23:06:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:10,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:10,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:10,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:10,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:06:10,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:10,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:06:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:10,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:10,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:10,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:10,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:10,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:06:10,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:10,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:10,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:10,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:10,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:10,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:06:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:10,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:10,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:10,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:06:10,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:10,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:06:10,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:06:10,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:10,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 23:06:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:10,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:10,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:10,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:10,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:06:10,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 23:06:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:06:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:06:10,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617814408] [2020-10-27 23:06:10,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:06:10,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:06:10,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736638119] [2020-10-27 23:06:10,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:06:10,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:06:10,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:06:10,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:06:10,958 INFO L87 Difference]: Start difference. First operand 80689 states and 104408 transitions. Second operand 10 states. [2020-10-27 23:06:11,317 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:06:13,394 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:06:25,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:06:25,090 INFO L93 Difference]: Finished difference Result 239980 states and 312652 transitions. [2020-10-27 23:06:25,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:06:25,091 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-10-27 23:06:25,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:06:26,148 INFO L225 Difference]: With dead ends: 239980 [2020-10-27 23:06:26,149 INFO L226 Difference]: Without dead ends: 159457 [2020-10-27 23:06:26,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:06:26,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159457 states. [2020-10-27 23:06:39,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159457 to 157081. [2020-10-27 23:06:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157081 states. [2020-10-27 23:06:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157081 states to 157081 states and 203684 transitions. [2020-10-27 23:06:39,881 INFO L78 Accepts]: Start accepts. Automaton has 157081 states and 203684 transitions. Word has length 87 [2020-10-27 23:06:39,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:06:39,881 INFO L481 AbstractCegarLoop]: Abstraction has 157081 states and 203684 transitions. [2020-10-27 23:06:39,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:06:39,881 INFO L276 IsEmpty]: Start isEmpty. Operand 157081 states and 203684 transitions. [2020-10-27 23:06:39,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 23:06:39,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:06:39,923 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:06:39,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:06:39,923 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:06:39,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:06:39,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1502636274, now seen corresponding path program 1 times [2020-10-27 23:06:39,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:06:39,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458269371] [2020-10-27 23:06:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:06:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 23:06:43,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:06:43,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3392 [2020-10-27 23:06:43,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:06:43,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:06:43,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 23:06:43,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:43,589 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:06:43,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:06:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:43,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:06:43,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:43,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:06:43,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:43,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:43,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:06:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:43,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:06:43,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:43,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:06:43,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:06:43,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:06:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:43,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:43,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:43,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:06:43,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:06:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:06:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:06:43,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:43,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 23:06:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:43,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:43,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:06:43,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:43,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:43,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:06:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:43,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:43,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:43,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:06:43,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:43,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:43,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:43,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:43,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:06:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:43,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:06:43,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:43,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:06:43,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:43,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:06:43,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:43,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 23:06:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:43,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:43,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:06:43,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:06:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:43,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 23:06:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:43,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:06:43,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:43,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:06:43,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:43,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:43,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:06:43,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:43,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 23:06:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:43,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:43,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:06:43,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:06:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:06:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:06:43,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:43,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 23:06:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:43,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:43,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:06:43,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:06:43,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:43,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 23:06:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:43,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:43,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:43,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:06:43,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:06:43,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:43,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 23:06:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:43,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:43,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:43,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:06:43,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:06:43,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:43,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 23:06:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:43,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:43,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:43,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:43,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:06:43,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 23:06:43,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:06:43,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-27 23:06:44,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458269371] [2020-10-27 23:06:44,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 23:06:44,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 23:06:44,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096435011] [2020-10-27 23:06:44,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:06:44,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:06:44,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:06:44,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:06:44,086 INFO L87 Difference]: Start difference. First operand 157081 states and 203684 transitions. Second operand 12 states. [2020-10-27 23:06:44,416 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:06:45,575 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:06:54,273 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:07:03,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:07:03,855 INFO L93 Difference]: Finished difference Result 358451 states and 465554 transitions. [2020-10-27 23:07:03,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 23:07:03,856 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 131 [2020-10-27 23:07:03,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:07:04,880 INFO L225 Difference]: With dead ends: 358451 [2020-10-27 23:07:04,880 INFO L226 Difference]: Without dead ends: 231568 [2020-10-27 23:07:05,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 23:07:05,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231568 states. [2020-10-27 23:07:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231568 to 228129. [2020-10-27 23:07:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228129 states. [2020-10-27 23:07:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228129 states to 228129 states and 294924 transitions. [2020-10-27 23:07:23,540 INFO L78 Accepts]: Start accepts. Automaton has 228129 states and 294924 transitions. Word has length 131 [2020-10-27 23:07:23,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:07:23,541 INFO L481 AbstractCegarLoop]: Abstraction has 228129 states and 294924 transitions. [2020-10-27 23:07:23,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 23:07:23,541 INFO L276 IsEmpty]: Start isEmpty. Operand 228129 states and 294924 transitions. [2020-10-27 23:07:23,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 23:07:23,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:07:23,600 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:07:23,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:07:23,600 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:07:23,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:07:23,601 INFO L82 PathProgramCache]: Analyzing trace with hash -2099845728, now seen corresponding path program 1 times [2020-10-27 23:07:23,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:07:23,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612719472] [2020-10-27 23:07:23,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:07:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:23,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:23,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:24,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:28,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:28,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:28,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 23:07:28,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:07:28,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:07:28,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:07:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 23:07:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 23:07:28,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:28,878 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:07:28,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:07:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:28,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:28,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:28,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:07:28,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:07:28,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:07:28,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:28,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:07:28,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:07:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:07:28,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:28,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:07:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:28,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:28,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:28,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:07:28,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:07:28,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:07:28,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:07:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:07:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:07:28,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:28,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:07:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:28,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:28,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:28,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:07:28,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:07:28,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:07:28,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:28,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:07:28,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:07:28,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:07:28,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:28,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 23:07:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:28,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:28,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:28,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:07:28,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:07:28,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:07:28,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:07:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:07:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:07:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:29,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:07:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:29,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:29,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:29,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:07:29,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:07:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:07:29,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:07:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:07:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:07:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:29,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:07:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:29,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:29,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:07:29,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:07:29,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:07:29,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:07:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:07:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:07:29,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:29,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 23:07:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:29,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:29,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:29,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:07:29,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:07:29,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:07:29,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:07:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:07:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:07:29,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:29,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 23:07:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:29,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:29,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:07:29,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:07:29,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:07:29,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:07:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:07:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:07:29,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:29,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 23:07:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:29,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:29,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:29,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:07:29,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:07:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:07:29,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:07:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:07:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:07:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:29,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 23:07:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:29,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:29,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:29,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:07:29,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:07:29,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:07:29,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:07:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:07:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:07:29,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:29,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 23:07:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:29,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:29,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:29,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:07:29,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:07:29,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:07:29,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:29,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:07:29,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:07:29,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:07:29,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:29,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 23:07:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:29,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:29,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:29,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:07:29,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:07:29,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:07:29,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:07:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:07:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 23:07:29,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:29,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 23:07:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:07:29,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:07:29,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:07:29,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:07:29,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:07:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:07:29,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:07:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:07:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:07:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:07:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:07:29,275 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 23:07:29,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612719472] [2020-10-27 23:07:29,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 23:07:29,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 23:07:29,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993671852] [2020-10-27 23:07:29,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 23:07:29,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:07:29,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 23:07:29,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:07:29,279 INFO L87 Difference]: Start difference. First operand 228129 states and 294924 transitions. Second operand 13 states. [2020-10-27 23:07:29,794 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:07:30,599 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:07:30,822 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:07:31,062 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:07:31,595 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:07:56,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:07:56,158 INFO L93 Difference]: Finished difference Result 559535 states and 722764 transitions. [2020-10-27 23:07:56,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 23:07:56,159 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-10-27 23:07:56,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:07:57,674 INFO L225 Difference]: With dead ends: 559535 [2020-10-27 23:07:57,674 INFO L226 Difference]: Without dead ends: 331572 [2020-10-27 23:07:58,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 23:07:58,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331572 states.