/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/Problem13_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:12:51,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:12:51,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:12:51,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:12:51,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:12:51,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:12:51,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:12:51,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:12:51,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:12:51,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:12:51,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:12:51,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:12:51,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:12:51,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:12:51,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:12:51,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:12:51,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:12:51,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:12:51,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:12:51,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:12:51,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:12:51,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:12:51,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:12:51,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:12:51,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:12:51,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:12:51,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:12:51,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:12:51,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:12:51,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:12:51,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:12:51,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:12:51,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:12:51,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:12:51,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:12:51,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:12:51,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:12:51,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:12:51,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:12:51,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:12:51,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:12:51,345 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 07:12:51,413 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:12:51,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:12:51,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:12:51,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:12:51,420 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:12:51,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:12:51,421 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:12:51,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:12:51,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:12:51,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:12:51,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:12:51,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:12:51,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:12:51,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:12:51,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:12:51,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:12:51,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:12:51,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:12:51,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:12:51,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:12:51,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:12:51,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:12:51,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:12:51,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:12:51,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:12:51,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:12:51,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:12:51,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:12:51,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:12:51,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:12:51,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:12:51,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:12:51,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:12:51,992 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:12:51,993 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:12:51,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14.c [2020-10-29 07:12:52,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67c68e43d/9fa9c44b1afc40868071af53387144fa/FLAG6b3345c13 [2020-10-29 07:12:53,358 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:12:53,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label14.c [2020-10-29 07:12:53,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67c68e43d/9fa9c44b1afc40868071af53387144fa/FLAG6b3345c13 [2020-10-29 07:12:53,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67c68e43d/9fa9c44b1afc40868071af53387144fa [2020-10-29 07:12:53,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:12:53,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:12:53,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:12:53,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:12:53,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:12:53,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:12:53" (1/1) ... [2020-10-29 07:12:53,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b67db31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:53, skipping insertion in model container [2020-10-29 07:12:53,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:12:53" (1/1) ... [2020-10-29 07:12:53,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:12:54,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:12:55,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:12:55,746 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:12:56,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:12:56,703 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:12:56,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:56 WrapperNode [2020-10-29 07:12:56,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:12:56,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:12:56,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:12:56,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:12:56,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:56" (1/1) ... [2020-10-29 07:12:56,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:56" (1/1) ... [2020-10-29 07:12:56,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:56" (1/1) ... [2020-10-29 07:12:56,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:56" (1/1) ... [2020-10-29 07:12:57,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:56" (1/1) ... [2020-10-29 07:12:57,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:56" (1/1) ... [2020-10-29 07:12:57,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:56" (1/1) ... [2020-10-29 07:12:57,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:12:57,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:12:57,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:12:57,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:12:57,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:56" (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 07:12:57,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:12:57,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:12:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:12:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:12:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:12:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:12:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:12:57,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:12:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:12:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:12:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:12:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:12:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:12:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:12:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:12:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:12:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:12:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:12:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:12:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:12:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:12:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:12:57,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:12:57,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:12:57,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:13:11,340 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:13:11,341 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:13:11,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:13:11 BoogieIcfgContainer [2020-10-29 07:13:11,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:13:11,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:13:11,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:13:11,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:13:11,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:12:53" (1/3) ... [2020-10-29 07:13:11,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1f064a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:13:11, skipping insertion in model container [2020-10-29 07:13:11,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:56" (2/3) ... [2020-10-29 07:13:11,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1f064a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:13:11, skipping insertion in model container [2020-10-29 07:13:11,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:13:11" (3/3) ... [2020-10-29 07:13:11,362 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label14.c [2020-10-29 07:13:11,381 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:13:11,389 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:13:11,405 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:13:11,465 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:13:11,466 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:13:11,466 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:13:11,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:13:11,466 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:13:11,466 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:13:11,466 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:13:11,466 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:13:11,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:13:11,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 07:13:11,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:13:11,540 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] [2020-10-29 07:13:11,541 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:13:11,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:13:11,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2111073506, now seen corresponding path program 1 times [2020-10-29 07:13:11,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:13:11,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339607157] [2020-10-29 07:13:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:13:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:11,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:12,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:12,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 07:13:12,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:12,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 792 [2020-10-29 07:13:12,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:12,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:13:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:13:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 07:13:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:13:12,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:13:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:12,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:12,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:12,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:13:12,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:12,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 07:13:12,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:12,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:13:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:13:12,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:12,966 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 07:13:12,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339607157] [2020-10-29 07:13:12,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:13:12,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:13:12,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884288070] [2020-10-29 07:13:12,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:13:12,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:13:13,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:13:13,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:13:13,010 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-29 07:13:36,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:13:36,680 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-29 07:13:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:13:36,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-29 07:13:36,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:13:36,740 INFO L225 Difference]: With dead ends: 3235 [2020-10-29 07:13:36,741 INFO L226 Difference]: Without dead ends: 2027 [2020-10-29 07:13:36,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:13:36,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-29 07:13:36,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-29 07:13:36,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-29 07:13:36,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-29 07:13:36,954 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 48 [2020-10-29 07:13:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:13:36,956 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-29 07:13:36,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:13:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-29 07:13:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 07:13:36,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:13:36,974 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:13:36,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:13:36,975 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:13:36,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:13:36,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1520322374, now seen corresponding path program 1 times [2020-10-29 07:13:36,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:13:36,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597824453] [2020-10-29 07:13:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:13:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:37,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:39,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:39,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 07:13:39,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:13:39,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2287 [2020-10-29 07:13:39,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:39,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:39,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:13:39,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:13:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:13:39,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:13:39,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:13:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:39,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:39,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:39,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:13:39,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:39,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:13:39,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:39,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:39,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:13:39,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:39,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:13:39,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:13:39,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:13:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:39,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:39,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:39,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:13:39,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:39,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 07:13:39,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:39,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:39,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:13:39,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:13:39,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:13:39,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:13:40,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597824453] [2020-10-29 07:13:40,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:13:40,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:13:40,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967757940] [2020-10-29 07:13:40,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:13:40,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:13:40,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:13:40,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:13:40,054 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 7 states. [2020-10-29 07:14:05,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:14:05,043 INFO L93 Difference]: Finished difference Result 5837 states and 9676 transitions. [2020-10-29 07:14:05,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:14:05,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-29 07:14:05,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:14:05,077 INFO L225 Difference]: With dead ends: 5837 [2020-10-29 07:14:05,077 INFO L226 Difference]: Without dead ends: 3833 [2020-10-29 07:14:05,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:14:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2020-10-29 07:14:05,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3694. [2020-10-29 07:14:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3694 states. [2020-10-29 07:14:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 5276 transitions. [2020-10-29 07:14:05,238 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 5276 transitions. Word has length 123 [2020-10-29 07:14:05,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:14:05,241 INFO L481 AbstractCegarLoop]: Abstraction has 3694 states and 5276 transitions. [2020-10-29 07:14:05,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:14:05,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 5276 transitions. [2020-10-29 07:14:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 07:14:05,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:14:05,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:14:05,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:14:05,246 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:14:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:14:05,248 INFO L82 PathProgramCache]: Analyzing trace with hash 544995422, now seen corresponding path program 1 times [2020-10-29 07:14:05,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:14:05,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380224365] [2020-10-29 07:14:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:14:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:05,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:06,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:06,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 07:14:06,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:14:06,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-29 07:14:06,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:06,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:06,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:14:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:14:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:14:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:14:06,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:14:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:06,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:06,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:06,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:14:06,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:06,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:14:06,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:06,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:14:06,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:06,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:14:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:06,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:06,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:06,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:14:06,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:06,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 07:14:06,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:06,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:06,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:06,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:14:06,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:14:06,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:14:06,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380224365] [2020-10-29 07:14:06,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:14:06,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:14:06,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282403921] [2020-10-29 07:14:06,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:14:06,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:14:06,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:14:06,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:14:06,897 INFO L87 Difference]: Start difference. First operand 3694 states and 5276 transitions. Second operand 7 states. [2020-10-29 07:14:27,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:14:27,924 INFO L93 Difference]: Finished difference Result 10944 states and 15850 transitions. [2020-10-29 07:14:27,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:14:27,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-10-29 07:14:27,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:14:27,966 INFO L225 Difference]: With dead ends: 10944 [2020-10-29 07:14:27,966 INFO L226 Difference]: Without dead ends: 7256 [2020-10-29 07:14:27,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:14:27,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7256 states. [2020-10-29 07:14:28,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7256 to 7121. [2020-10-29 07:14:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7121 states. [2020-10-29 07:14:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7121 states to 7121 states and 9205 transitions. [2020-10-29 07:14:28,212 INFO L78 Accepts]: Start accepts. Automaton has 7121 states and 9205 transitions. Word has length 153 [2020-10-29 07:14:28,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:14:28,216 INFO L481 AbstractCegarLoop]: Abstraction has 7121 states and 9205 transitions. [2020-10-29 07:14:28,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:14:28,216 INFO L276 IsEmpty]: Start isEmpty. Operand 7121 states and 9205 transitions. [2020-10-29 07:14:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 07:14:28,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:14:28,223 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:14:28,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:14:28,223 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:14:28,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:14:28,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2112243674, now seen corresponding path program 1 times [2020-10-29 07:14:28,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:14:28,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992885388] [2020-10-29 07:14:28,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:14:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:28,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:28,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:28,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:33,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:33,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 07:14:33,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:14:33,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 07:14:33,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:33,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:33,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:33,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:14:33,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:14:33,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:33,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:14:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:33,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:33,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:33,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:14:33,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:33,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:14:33,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:33,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:14:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:14:33,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:33,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:14:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:33,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:33,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:14:33,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:33,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 07:14:33,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:33,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:14:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:14:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:33,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:34,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:34,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:14:34,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:34,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 07:14:34,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:34,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:14:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:14:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:34,172 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:14:34,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992885388] [2020-10-29 07:14:34,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:14:34,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:14:34,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816351088] [2020-10-29 07:14:34,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:14:34,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:14:34,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:14:34,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:14:34,176 INFO L87 Difference]: Start difference. First operand 7121 states and 9205 transitions. Second operand 7 states. [2020-10-29 07:15:07,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:15:07,429 INFO L93 Difference]: Finished difference Result 18900 states and 25657 transitions. [2020-10-29 07:15:07,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:15:07,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-29 07:15:07,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:15:07,495 INFO L225 Difference]: With dead ends: 18900 [2020-10-29 07:15:07,495 INFO L226 Difference]: Without dead ends: 12588 [2020-10-29 07:15:07,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:15:07,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12588 states. [2020-10-29 07:15:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12588 to 12401. [2020-10-29 07:15:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12401 states. [2020-10-29 07:15:07,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12401 states to 12401 states and 16706 transitions. [2020-10-29 07:15:07,885 INFO L78 Accepts]: Start accepts. Automaton has 12401 states and 16706 transitions. Word has length 248 [2020-10-29 07:15:07,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:15:07,887 INFO L481 AbstractCegarLoop]: Abstraction has 12401 states and 16706 transitions. [2020-10-29 07:15:07,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:15:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 12401 states and 16706 transitions. [2020-10-29 07:15:07,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 07:15:07,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:15:07,893 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:15:07,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:15:07,894 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:15:07,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:15:07,894 INFO L82 PathProgramCache]: Analyzing trace with hash 301010242, now seen corresponding path program 1 times [2020-10-29 07:15:07,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:15:07,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336351200] [2020-10-29 07:15:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:15:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:08,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:08,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:08,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:11,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:11,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-29 07:15:11,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:15:11,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3137 [2020-10-29 07:15:11,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:11,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:11,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:15:11,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:15:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-29 07:15:11,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:11,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:15:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:11,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:11,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:11,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:15:11,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:11,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:15:11,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:11,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:11,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:15:11,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:11,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:15:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:11,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:11,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:11,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:11,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:15:11,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:15:11,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-29 07:15:11,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:11,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:15:11,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:11,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:15:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:11,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:11,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:11,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:15:11,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 07:15:11,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:11,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:15:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:15:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:15:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:15:12,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336351200] [2020-10-29 07:15:12,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:15:12,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:15:12,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239189727] [2020-10-29 07:15:12,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:15:12,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:15:12,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:15:12,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:15:12,248 INFO L87 Difference]: Start difference. First operand 12401 states and 16706 transitions. Second operand 7 states. [2020-10-29 07:15:12,405 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:15:36,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:15:36,119 INFO L93 Difference]: Finished difference Result 34566 states and 49319 transitions. [2020-10-29 07:15:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:15:36,122 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-29 07:15:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:15:36,230 INFO L225 Difference]: With dead ends: 34566 [2020-10-29 07:15:36,230 INFO L226 Difference]: Without dead ends: 22974 [2020-10-29 07:15:36,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:15:36,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22974 states. [2020-10-29 07:15:36,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22974 to 22803. [2020-10-29 07:15:36,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22803 states. [2020-10-29 07:15:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22803 states to 22803 states and 30037 transitions. [2020-10-29 07:15:36,991 INFO L78 Accepts]: Start accepts. Automaton has 22803 states and 30037 transitions. Word has length 253 [2020-10-29 07:15:36,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:15:36,992 INFO L481 AbstractCegarLoop]: Abstraction has 22803 states and 30037 transitions. [2020-10-29 07:15:36,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:15:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 22803 states and 30037 transitions. [2020-10-29 07:15:36,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-29 07:15:36,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:15:36,999 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:15:36,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:15:37,000 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:15:37,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:15:37,002 INFO L82 PathProgramCache]: Analyzing trace with hash -286290943, now seen corresponding path program 1 times [2020-10-29 07:15:37,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:15:37,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983556274] [2020-10-29 07:15:37,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:15:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:37,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:37,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:37,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:37,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:38,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:38,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:39,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:39,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-29 07:15:39,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:15:39,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2001 [2020-10-29 07:15:39,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:39,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:15:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 07:15:39,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:39,265 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:15:39,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:15:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:39,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:39,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:39,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:15:39,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:39,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:15:39,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:39,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:15:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:39,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:15:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:39,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:39,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:39,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:15:39,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:15:39,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-29 07:15:39,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:39,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 07:15:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:39,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:15:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:39,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:39,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:39,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:39,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:15:39,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:15:39,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 07:15:39,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:39,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:15:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 07:15:39,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 07:15:39,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983556274] [2020-10-29 07:15:39,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:15:39,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:15:39,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572054310] [2020-10-29 07:15:39,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:15:39,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:15:39,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:15:39,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:15:39,962 INFO L87 Difference]: Start difference. First operand 22803 states and 30037 transitions. Second operand 6 states. [2020-10-29 07:15:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:15:57,664 INFO L93 Difference]: Finished difference Result 37378 states and 50536 transitions. [2020-10-29 07:15:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:15:57,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 267 [2020-10-29 07:15:57,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:15:57,746 INFO L225 Difference]: With dead ends: 37378 [2020-10-29 07:15:57,746 INFO L226 Difference]: Without dead ends: 22793 [2020-10-29 07:15:57,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:15:57,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22793 states. [2020-10-29 07:15:58,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22793 to 22792. [2020-10-29 07:15:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22792 states. [2020-10-29 07:15:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22792 states to 22792 states and 30009 transitions. [2020-10-29 07:15:58,388 INFO L78 Accepts]: Start accepts. Automaton has 22792 states and 30009 transitions. Word has length 267 [2020-10-29 07:15:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:15:58,389 INFO L481 AbstractCegarLoop]: Abstraction has 22792 states and 30009 transitions. [2020-10-29 07:15:58,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:15:58,389 INFO L276 IsEmpty]: Start isEmpty. Operand 22792 states and 30009 transitions. [2020-10-29 07:15:58,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-29 07:15:58,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:15:58,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:15:58,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:15:58,396 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:15:58,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:15:58,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1876574351, now seen corresponding path program 1 times [2020-10-29 07:15:58,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:15:58,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419995659] [2020-10-29 07:15:58,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:15:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:58,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:58,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:59,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:00,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:00,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-29 07:16:00,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:16:00,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2313 [2020-10-29 07:16:00,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:00,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:00,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:16:00,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:16:00,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-29 07:16:00,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:16:01,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:16:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:01,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:01,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:01,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:16:01,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:01,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:16:01,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:01,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:01,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:01,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:16:01,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:16:01,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:16:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:01,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:01,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:01,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:01,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:16:01,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:16:01,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-29 07:16:01,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:01,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:16:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:16:01,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:16:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:01,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:01,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:01,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:16:01,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:16:01,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-29 07:16:01,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:01,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:16:01,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:16:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 72 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 07:16:02,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419995659] [2020-10-29 07:16:02,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:16:02,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:16:02,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32450812] [2020-10-29 07:16:02,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:16:02,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:16:02,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:16:02,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:16:02,140 INFO L87 Difference]: Start difference. First operand 22792 states and 30009 transitions. Second operand 7 states. [2020-10-29 07:16:02,314 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-29 07:16:03,388 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 07:16:05,925 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 07:16:07,966 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 76