/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:40:41,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:40:41,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:40:41,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:40:41,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:40:41,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:40:41,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:40:41,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:40:41,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:40:41,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:40:41,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:40:41,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:40:41,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:40:41,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:40:41,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:40:41,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:40:41,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:40:41,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:40:41,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:40:41,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:40:41,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:40:41,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:40:41,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:40:41,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:40:41,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:40:41,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:40:41,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:40:41,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:40:41,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:40:41,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:40:41,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:40:41,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:40:41,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:40:41,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:40:41,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:40:41,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:40:41,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:40:41,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:40:41,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:40:41,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:40:41,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:40:41,295 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 [2020-10-29 05:40:41,347 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:40:41,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:40:41,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:40:41,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:40:41,353 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:40:41,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:40:41,354 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:40:41,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:40:41,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:40:41,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:40:41,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:40:41,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:40:41,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:40:41,356 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:40:41,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:40:41,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:40:41,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:40:41,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:40:41,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:40:41,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:40:41,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:40:41,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:40:41,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:40:41,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:40:41,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:40:41,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:40:41,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:40:41,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:40:41,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:40:41,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:40:41,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:40:41,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:40:41,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:40:41,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:40:41,815 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:40:41,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label23.c [2020-10-29 05:40:41,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4c1545ba/98760f0b909d48499075de8fbd487ef9/FLAG95d368ba7 [2020-10-29 05:40:43,152 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:40:43,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label23.c [2020-10-29 05:40:43,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4c1545ba/98760f0b909d48499075de8fbd487ef9/FLAG95d368ba7 [2020-10-29 05:40:43,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4c1545ba/98760f0b909d48499075de8fbd487ef9 [2020-10-29 05:40:43,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:40:43,390 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:40:43,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:40:43,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:40:43,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:40:43,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:40:43" (1/1) ... [2020-10-29 05:40:43,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5789920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:43, skipping insertion in model container [2020-10-29 05:40:43,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:40:43" (1/1) ... [2020-10-29 05:40:43,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:40:43,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:40:45,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:40:45,694 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:40:46,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:40:46,966 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:40:46,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:46 WrapperNode [2020-10-29 05:40:46,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:40:46,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:40:46,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:40:46,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:40:46,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:46" (1/1) ... [2020-10-29 05:40:46,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:46" (1/1) ... [2020-10-29 05:40:47,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:46" (1/1) ... [2020-10-29 05:40:47,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:46" (1/1) ... [2020-10-29 05:40:47,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:46" (1/1) ... [2020-10-29 05:40:47,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:46" (1/1) ... [2020-10-29 05:40:47,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:46" (1/1) ... [2020-10-29 05:40:47,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:40:47,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:40:47,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:40:47,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:40:47,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:40:47,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:40:47,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:40:47,665 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:40:47,665 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:40:47,665 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:40:47,665 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:40:47,665 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:40:47,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:40:47,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:40:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:40:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:40:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:40:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:40:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:40:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:40:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:40:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:40:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:40:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:40:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:40:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:40:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:40:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:40:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:40:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:40:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:40:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:40:55,298 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:40:55,299 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:40:55,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:40:55 BoogieIcfgContainer [2020-10-29 05:40:55,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:40:55,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:40:55,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:40:55,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:40:55,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:40:43" (1/3) ... [2020-10-29 05:40:55,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c51f2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:40:55, skipping insertion in model container [2020-10-29 05:40:55,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:46" (2/3) ... [2020-10-29 05:40:55,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c51f2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:40:55, skipping insertion in model container [2020-10-29 05:40:55,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:40:55" (3/3) ... [2020-10-29 05:40:55,315 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label23.c [2020-10-29 05:40:55,328 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:40:55,335 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:40:55,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:40:55,405 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:40:55,406 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:40:55,406 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:40:55,406 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:40:55,406 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:40:55,406 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:40:55,406 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:40:55,406 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:40:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:40:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-29 05:40:55,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:40:55,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:40:55,532 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:40:55,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:40:55,540 INFO L82 PathProgramCache]: Analyzing trace with hash -45380576, now seen corresponding path program 1 times [2020-10-29 05:40:55,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:40:55,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868671811] [2020-10-29 05:40:55,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:40:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:57,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:02,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:02,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1000 [2020-10-29 05:41:02,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:41:02,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5238 [2020-10-29 05:41:02,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:02,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:02,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:41:02,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:41:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 991 [2020-10-29 05:41:02,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:41:03,442 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:41:03,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:41:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:03,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:03,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:03,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:41:03,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:03,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 05:41:03,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:03,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:41:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:41:03,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:41:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:41:04,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868671811] [2020-10-29 05:41:04,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:41:04,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:41:04,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879459831] [2020-10-29 05:41:04,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:41:04,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:41:04,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:41:04,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:41:04,981 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-29 05:41:05,229 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:41:21,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:41:21,527 INFO L93 Difference]: Finished difference Result 3764 states and 7025 transitions. [2020-10-29 05:41:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:41:21,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 982 [2020-10-29 05:41:21,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:41:21,569 INFO L225 Difference]: With dead ends: 3764 [2020-10-29 05:41:21,569 INFO L226 Difference]: Without dead ends: 2381 [2020-10-29 05:41:21,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:41:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-10-29 05:41:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2338. [2020-10-29 05:41:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2338 states. [2020-10-29 05:41:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 3805 transitions. [2020-10-29 05:41:21,790 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 3805 transitions. Word has length 982 [2020-10-29 05:41:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:41:21,793 INFO L481 AbstractCegarLoop]: Abstraction has 2338 states and 3805 transitions. [2020-10-29 05:41:21,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:41:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 3805 transitions. [2020-10-29 05:41:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2020-10-29 05:41:21,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:41:21,836 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:41:21,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:41:21,836 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:41:21,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:41:21,838 INFO L82 PathProgramCache]: Analyzing trace with hash 2048247777, now seen corresponding path program 1 times [2020-10-29 05:41:21,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:41:21,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219896932] [2020-10-29 05:41:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:41:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:22,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:24,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:27,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:27,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1010 [2020-10-29 05:41:27,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:41:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-29 05:41:27,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:27,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:41:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:41:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 988 [2020-10-29 05:41:27,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:41:28,618 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:41:28,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:41:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:28,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:28,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:41:28,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:28,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:41:28,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:28,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:28,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:41:28,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:28,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:41:28,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:41:28,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:41:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:28,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:28,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:28,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:41:28,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:28,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:41:28,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:28,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:41:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:41:28,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:29,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:41:29,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219896932] [2020-10-29 05:41:29,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:41:29,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:41:29,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301427329] [2020-10-29 05:41:29,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:41:29,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:41:29,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:41:29,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:41:29,815 INFO L87 Difference]: Start difference. First operand 2338 states and 3805 transitions. Second operand 5 states. [2020-10-29 05:41:30,097 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:41:47,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:41:47,995 INFO L93 Difference]: Finished difference Result 5773 states and 9696 transitions. [2020-10-29 05:41:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:41:47,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 990 [2020-10-29 05:41:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:41:48,022 INFO L225 Difference]: With dead ends: 5773 [2020-10-29 05:41:48,022 INFO L226 Difference]: Without dead ends: 3441 [2020-10-29 05:41:48,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:41:48,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3441 states. [2020-10-29 05:41:48,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3441 to 3394. [2020-10-29 05:41:48,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3394 states. [2020-10-29 05:41:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 5758 transitions. [2020-10-29 05:41:48,150 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 5758 transitions. Word has length 990 [2020-10-29 05:41:48,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:41:48,152 INFO L481 AbstractCegarLoop]: Abstraction has 3394 states and 5758 transitions. [2020-10-29 05:41:48,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:41:48,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 5758 transitions. [2020-10-29 05:41:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2020-10-29 05:41:48,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:41:48,214 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:41:48,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:41:48,214 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:41:48,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:41:48,217 INFO L82 PathProgramCache]: Analyzing trace with hash 648673433, now seen corresponding path program 1 times [2020-10-29 05:41:48,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:41:48,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656645342] [2020-10-29 05:41:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:41:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:53,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:53,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1021 [2020-10-29 05:41:53,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:41:53,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5371 [2020-10-29 05:41:53,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:53,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:41:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:41:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 05:41:53,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:54,191 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:41:54,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:41:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:54,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:54,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:54,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:41:54,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:54,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:41:54,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:54,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:41:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:41:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:54,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:41:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:54,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:54,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:54,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:54,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:41:54,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:41:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:41:54,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:54,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:41:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:41:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 05:41:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:54,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 05:41:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:54,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:54,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:41:54,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 05:41:54,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:54,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:54,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:41:54,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:41:54,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:41:54,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:41:55,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656645342] [2020-10-29 05:41:55,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:41:55,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:41:55,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243709865] [2020-10-29 05:41:55,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:41:55,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:41:55,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:41:55,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:41:55,110 INFO L87 Difference]: Start difference. First operand 3394 states and 5758 transitions. Second operand 7 states. [2020-10-29 05:41:55,404 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:41:56,551 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:42:16,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:42:16,641 INFO L93 Difference]: Finished difference Result 10114 states and 17397 transitions. [2020-10-29 05:42:16,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:42:16,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 999 [2020-10-29 05:42:16,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:42:16,686 INFO L225 Difference]: With dead ends: 10114 [2020-10-29 05:42:16,686 INFO L226 Difference]: Without dead ends: 6726 [2020-10-29 05:42:16,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:42:16,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2020-10-29 05:42:16,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 6635. [2020-10-29 05:42:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6635 states. [2020-10-29 05:42:16,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6635 states to 6635 states and 10539 transitions. [2020-10-29 05:42:16,928 INFO L78 Accepts]: Start accepts. Automaton has 6635 states and 10539 transitions. Word has length 999 [2020-10-29 05:42:16,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:42:16,928 INFO L481 AbstractCegarLoop]: Abstraction has 6635 states and 10539 transitions. [2020-10-29 05:42:16,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:42:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6635 states and 10539 transitions. [2020-10-29 05:42:16,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-29 05:42:16,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:42:16,962 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:42:16,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:42:16,962 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:42:16,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:42:16,964 INFO L82 PathProgramCache]: Analyzing trace with hash -625645550, now seen corresponding path program 1 times [2020-10-29 05:42:16,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:42:16,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465991566] [2020-10-29 05:42:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:42:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:17,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:17,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:22,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:22,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1028 [2020-10-29 05:42:22,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:42:22,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5176 [2020-10-29 05:42:22,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:22,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:22,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:42:22,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:42:22,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:42:22,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:22,712 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:42:22,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:42:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:22,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:22,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:22,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:42:22,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:42:22,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:22,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:42:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:42:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:42:22,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:22,872 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:42:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:42:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:22,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:22,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:22,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:42:22,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:42:22,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:22,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:42:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:42:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:42:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:22,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 05:42:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:22,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:22,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:42:22,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 05:42:22,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:22,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:42:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:42:22,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:42:22,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:42:23,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465991566] [2020-10-29 05:42:23,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:42:23,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:42:23,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999544812] [2020-10-29 05:42:23,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:42:23,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:42:23,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:42:23,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:42:23,562 INFO L87 Difference]: Start difference. First operand 6635 states and 10539 transitions. Second operand 8 states. [2020-10-29 05:42:23,854 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:42:24,227 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:42:24,955 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:42:56,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:42:56,247 INFO L93 Difference]: Finished difference Result 17919 states and 29531 transitions. [2020-10-29 05:42:56,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 05:42:56,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1006 [2020-10-29 05:42:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:42:56,317 INFO L225 Difference]: With dead ends: 17919 [2020-10-29 05:42:56,317 INFO L226 Difference]: Without dead ends: 11290 [2020-10-29 05:42:56,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 05:42:56,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11290 states. [2020-10-29 05:42:56,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11290 to 11148. [2020-10-29 05:42:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11148 states. [2020-10-29 05:42:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11148 states to 11148 states and 17242 transitions. [2020-10-29 05:42:56,716 INFO L78 Accepts]: Start accepts. Automaton has 11148 states and 17242 transitions. Word has length 1006 [2020-10-29 05:42:56,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:42:56,721 INFO L481 AbstractCegarLoop]: Abstraction has 11148 states and 17242 transitions. [2020-10-29 05:42:56,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:42:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 11148 states and 17242 transitions. [2020-10-29 05:42:56,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-29 05:42:56,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:42:56,764 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:42:56,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:42:56,765 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:42:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:42:56,766 INFO L82 PathProgramCache]: Analyzing trace with hash 2064036652, now seen corresponding path program 1 times [2020-10-29 05:42:56,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:42:56,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776185035] [2020-10-29 05:42:56,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:42:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:56,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:57,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:01,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:01,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1028 [2020-10-29 05:43:01,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:43:01,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-29 05:43:01,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:01,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:01,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:43:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:43:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:43:01,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:02,534 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:43:02,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:43:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:02,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:02,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:02,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:43:02,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:43:02,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:02,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:43:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:43:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:43:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:02,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:43:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:02,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:02,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:02,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:43:02,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:02,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 05:43:02,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:02,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:43:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:43:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:43:02,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:02,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:43:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:02,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:02,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:43:02,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:02,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:43:02,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:02,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:43:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 05:43:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:43:02,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:43:03,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776185035] [2020-10-29 05:43:03,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:43:03,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:43:03,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141376436] [2020-10-29 05:43:03,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:43:03,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:43:03,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:43:03,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:43:03,382 INFO L87 Difference]: Start difference. First operand 11148 states and 17242 transitions. Second operand 7 states. [2020-10-29 05:43:03,653 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:43:04,298 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:43:26,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:43:26,395 INFO L93 Difference]: Finished difference Result 33946 states and 56012 transitions. [2020-10-29 05:43:26,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:43:26,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1006 [2020-10-29 05:43:26,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:43:26,491 INFO L225 Difference]: With dead ends: 33946 [2020-10-29 05:43:26,491 INFO L226 Difference]: Without dead ends: 22804 [2020-10-29 05:43:26,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:43:26,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22804 states. [2020-10-29 05:43:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22804 to 22498. [2020-10-29 05:43:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22498 states. [2020-10-29 05:43:27,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22498 states to 22498 states and 34676 transitions. [2020-10-29 05:43:27,388 INFO L78 Accepts]: Start accepts. Automaton has 22498 states and 34676 transitions. Word has length 1006 [2020-10-29 05:43:27,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:43:27,388 INFO L481 AbstractCegarLoop]: Abstraction has 22498 states and 34676 transitions. [2020-10-29 05:43:27,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:43:27,388 INFO L276 IsEmpty]: Start isEmpty. Operand 22498 states and 34676 transitions. [2020-10-29 05:43:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2020-10-29 05:43:27,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:43:27,487 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:43:27,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:43:27,487 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:43:27,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:43:27,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1678087655, now seen corresponding path program 1 times [2020-10-29 05:43:27,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:43:27,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612293866] [2020-10-29 05:43:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:43:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:28,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:32,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:32,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1052 [2020-10-29 05:43:32,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:43:32,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5205 [2020-10-29 05:43:32,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:32,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:43:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:43:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 05:43:32,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:43:33,427 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:43:33,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:43:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:33,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:33,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:33,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:43:33,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:33,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:43:33,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:33,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:33,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:43:33,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:43:33,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:43:33,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:33,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:43:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:33,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:33,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:33,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 05:43:33,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:33,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 05:43:33,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:33,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:43:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:43:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 05:43:33,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:33,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 05:43:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:33,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:33,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:33,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:43:33,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:33,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 05:43:33,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:33,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:43:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:43:33,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 05:43:33,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 05:43:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:33,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:33,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:43:33,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:33,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:43:33,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:33,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:43:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 05:43:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:43:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 42 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 05:43:34,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612293866] [2020-10-29 05:43:34,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:43:34,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:43:34,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748187630] [2020-10-29 05:43:34,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:43:34,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:43:34,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:43:34,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:43:34,290 INFO L87 Difference]: Start difference. First operand 22498 states and 34676 transitions. Second operand 7 states. [2020-10-29 05:43:34,557 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:43:36,050 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:43:57,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:43:57,835 INFO L93 Difference]: Finished difference Result 68184 states and 116109 transitions. [2020-10-29 05:43:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:43:57,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1028 [2020-10-29 05:43:57,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:43:58,058 INFO L225 Difference]: With dead ends: 68184 [2020-10-29 05:43:58,059 INFO L226 Difference]: Without dead ends: 45692 [2020-10-29 05:43:58,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:43:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45692 states. [2020-10-29 05:43:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45692 to 45336. [2020-10-29 05:43:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45336 states. [2020-10-29 05:43:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45336 states to 45336 states and 70936 transitions. [2020-10-29 05:43:59,726 INFO L78 Accepts]: Start accepts. Automaton has 45336 states and 70936 transitions. Word has length 1028 [2020-10-29 05:43:59,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:43:59,726 INFO L481 AbstractCegarLoop]: Abstraction has 45336 states and 70936 transitions. [2020-10-29 05:43:59,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:43:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 45336 states and 70936 transitions. [2020-10-29 05:43:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2020-10-29 05:43:59,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:43:59,932 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:43:59,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:43:59,932 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:43:59,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:43:59,933 INFO L82 PathProgramCache]: Analyzing trace with hash 472417672, now seen corresponding path program 1 times [2020-10-29 05:43:59,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:43:59,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740425360] [2020-10-29 05:43:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:44:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:00,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:00,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:00,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:05,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:44:05,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1077 [2020-10-29 05:44:05,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:44:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-29 05:44:05,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:44:05,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:44:05,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:44:05,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:44:05,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 05:44:05,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:44:05,732 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:44:05,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:44:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:05,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:05,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:44:05,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:44:05,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:44:05,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:44:05,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:44:05,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:44:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:44:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:44:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:44:05,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:44:05,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:44:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:05,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:44:05,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 05:44:05,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:44:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 05:44:05,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:44:05,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:44:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:44:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:44:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 05:44:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:44:06,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 05:44:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:06,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:06,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:44:06,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:44:06,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:44:06,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 05:44:06,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:44:06,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:44:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:44:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:44:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:44:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:44:06,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:44:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:06,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:06,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:44:06,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:44:06,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:44:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:44:06,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:44:06,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:44:06,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:44:06,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 05:44:06,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:44:06,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:44:06,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 05:44:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:06,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:06,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:44:06,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:44:06,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:44:06,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:44:06,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:44:06,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:44:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:44:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 05:44:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:44:06,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:44:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 79 proven. 30 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 05:44:07,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740425360] [2020-10-29 05:44:07,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:44:07,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:44:07,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90719353] [2020-10-29 05:44:07,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:44:07,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:44:07,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:44:07,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:44:07,064 INFO L87 Difference]: Start difference. First operand 45336 states and 70936 transitions. Second operand 8 states. [2020-10-29 05:44:07,357 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:44:09,882 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 159